Sport Float Pack For Mac

General information.

Enjoy your day on the beach or in the pool with Airhead lounge floats, water games, floating coolers and other fun inflatable tubes. Visit airhead.com and order online now! The MAC 3 is a double chamber design float-type, liquid level switch that uses a micro-type switch for the switching operation. NO POTENTIALLY DANGEROUS MERCURY IS USED IN THIS SWITCH! The case and cable are hermetically sealed via re-injection molding (NOT BY GLUEING).

A MacBook Pro covered by the Apple Limited Warranty or by an AppleCare Protection Plan may receive a replacement foot without charge. A MacBook Pro that is out-of-warranty may have a charge associated with the replacement. The DIY replacement kit not available for MacBook Pro with Retina display computers.

May 13, 2019 This article details the do it yourself (DIY) repair process for installing feet and plugs for MacBook (13-inch, Aluminum, Late 2008) and MacBook Pro computers that exhibit missing or damaged bottom case feet. MAC 3 float switch Reliable, cost-effective level control for tank emptying or tank filling Suitable for clean or dirty water Submersible up to 10m maximum 10, 25, 50 and 100 metre PVC cable lengths Options for other lengths and materials Plug and play connection available. Choose from hundreds of free Mac wallpapers. Download HD wallpapers for free on Unsplash.

Notes: For consumers, who are covered by consumer protection laws or regulations in their country or region of purchase or, if different, their country or region of residence, the benefits conferred by Apple's One Year Limited Warranty or by an AppleCare Protection Plan are in addition to all rights and remedies conveyed by such consumer protection laws and regulations, including but not limited to these additional rights.

You may choose between three options to receive a replacement bottom case foot:

Assisted service

1. Visit an Apple Retail Store. Set up an appointment with a Genius.
2. Visit an Apple Authorized Service Provider. Find one here.

Self service

1. Order a bottom case foot replacement DIY kit. Contact Apple to order.

DIY Foot Replacement Instructions

Note: Use the foot replacement kit for missing feet only. Do not replace well-adhered feet. Removing feet for the sake of replacement can damage the bottom case.

Tools Needed to Complete Repair:

• Phillips 00 screwdriver
• Tweezers
• Paper clip or safety pin

Gloves are not necessary for this procedure.

Preliminary Step

Before you begin, check the foot location requiring replacement and verify that the case plug, and the case foot in the kit, match the pictures below.

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Procedure

Warning: The glue used in this procedure can bond instantly to skin. Do not touch the glue. In the event of contact, review the safety instructions at the end of this document. For additional information, refer to the glue manufacturer:

Loctite
Rocky Hill, CT. 06067
www.loctite.com

Note: Do not use any other type of glue except the one included in the foot replacement kit. Fumes from other types of glue could affect other internal components.

1. Place the computer upside down on a clean, lint-free cloth or other nonabrasive surface. Remove the bottom case.
2. Using the Phillips 00 screwdriver, remove the bottom case by removing 10 screws. Important: Screws at sides and front must be removed and installed at an angle.
3. Gently pull the bottom case from the side the display hinges are on and lift upwards at an angle.
4. Make sure the foot area on the bottom case is clean and free of debris. If any portion of the foot adhesive remains, peel it up with a pair of tweezers.
5. Clean both sides of the bottom case around the foot area. Allow the alcohol to evaporate.
6. Peel the outer foot from its packaging and affix it firmly to the bottom case. Do not use the glue to adhere the outer foot to the bottom case. Avoid touching the adhesive backing.

7. Use a paperclip or safety pin to open the glue nozzle. A paperclip or safety pin can also unplug the glue nozzle after storage. Apply a very small drop of glue on the bottom of the foot on the inner bottom case. Do not spread the glue.

8. Seat the plug onto the glued area.
9. Do not use your finger to press the foot plug down. Use the wooden end of a cotton swab to press the foot plug into place. Lightly press and hold the foot in place for 30 seconds.
10. Clean any excess glue with a cotton dry swab. Important: Do notwipe the glue;use the cotton dry swab to absorb any excess glue. Excess puddled glue may take hours to dry and may cause the bottom case to adhere to the logic board or interior cabling.
11. Using a timer, allow the glue to set for at least 60 minutes before applying the foot plug cover over the foot plug. Important: If laser etching is visible by the foot area, do not use the foot plug cover. Laser etching will normally be found on the left-rear foot area.

12. Reassembly Note: Install screws in order shown. If sequence is not followed, bottom case might wobble when placed on level surface.

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SAFETY INSTRUCTIONS: GLUE IS AN EYE AND SKIN IRRITANT. GLUE BONDS TO SKIN INSTANTLY.

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Contains ethyl cyanoacrylate. Avoid contact with skin and eyes. If eye or mouth contact occurs, hold eyelid or mouth open and rinse thoroughly but gently with water only for 15 minutes and GET MEDICAL ATTENTION. Liquid glue will sting eye temporarily. Solidified glue may irritate eye like a grain of sand and should be treated by an eye doctor.

If skin bonding occurs, soak in acetone-based nail polish remover or warm soapy water and carefully peel or roll skin apart (do not pull). Contact through clothing may cause skin burn. If spilled on clothing, flush with cold water. Avoid prolonged breathing of vapors. use with adequate ventilation. KEEP OUT OF THE REACH OF CHILDREN.

Source code:Lib/struct.py

This module performs conversions between Python values and C structs representedas Python bytes objects. This can be used in handling binary datastored in files or from network connections, among other sources. It usesFormat Strings as compact descriptions of the layout of the Cstructs and the intended conversion to/from Python values.

Note

Contains ethyl cyanoacrylate. Avoid contact with skin and eyes. If eye or mouth contact occurs, hold eyelid or mouth open and rinse thoroughly but gently with water only for 15 minutes and GET MEDICAL ATTENTION. Liquid glue will sting eye temporarily. Solidified glue may irritate eye like a grain of sand and should be treated by an eye doctor.

If skin bonding occurs, soak in acetone-based nail polish remover or warm soapy water and carefully peel or roll skin apart (do not pull). Contact through clothing may cause skin burn. If spilled on clothing, flush with cold water. Avoid prolonged breathing of vapors. use with adequate ventilation. KEEP OUT OF THE REACH OF CHILDREN.

Source code:Lib/struct.py

This module performs conversions between Python values and C structs representedas Python bytes objects. This can be used in handling binary datastored in files or from network connections, among other sources. It usesFormat Strings as compact descriptions of the layout of the Cstructs and the intended conversion to/from Python values.

Note

By default, the result of packing a given C struct includes pad bytes inorder to maintain proper alignment for the C types involved; similarly,alignment is taken into account when unpacking. This behavior is chosen sothat the bytes of a packed struct correspond exactly to the layout in memoryof the corresponding C struct. To handle platform-independent data formatsor omit implicit pad bytes, use standard size and alignment instead ofnative size and alignment: see Byte Order, Size, and Alignment for details.

Several struct functions (and methods of Struct) take a bufferargument. This refers to objects that implement the Buffer Protocol andprovide either a readable or read-writable buffer. The most common types usedfor that purpose are bytes and bytearray, but many other typesthat can be viewed as an array of bytes implement the buffer protocol, so thatthey can be read/filled without additional copying from a bytes object.

Functions and Exceptions¶

The module defines the following exception and functions:

Exception raised on various occasions; argument is a string describing whatis wrong.

Return a bytes object containing the values v1, v2, … packed accordingto the format string format. The arguments must match the values required bythe format exactly.

Pack the values v1, v2, … according to the format string format andwrite the packed bytes into the writable buffer buffer starting atposition offset. Note that offset is a required argument.

Unpack from the buffer buffer (presumably packed by pack(format,..))according to the format string format. The result is a tuple even if itcontains exactly one item. The buffer's size in bytes must match thesize required by the format, as reflected by calcsize().

Unpack from buffer starting at position offset, according to the formatstring format. The result is a tuple even if it contains exactly oneitem. The buffer's size in bytes, starting at position offset, must be atleast the size required by the format, as reflected by calcsize().

Iteratively unpack from the buffer buffer according to the formatstring format. This function returns an iterator which will readequally-sized chunks from the buffer until all its contents have beenconsumed. The buffer's size in bytes must be a multiple of the sizerequired by the format, as reflected by calcsize().

Each iteration yields a tuple as specified by the format string.

Return the size of the struct (and hence of the bytes object produced bypack(format,..)) corresponding to the format string format.

Format Strings¶

Format strings are the mechanism used to specify the expected layout whenpacking and unpacking data. They are built up from Format Characters,which specify the type of data being packed/unpacked. In addition, there arespecial characters for controlling the Byte Order, Size, and Alignment.

Byte Order, Size, and Alignment¶

By default, C types are represented in the machine's native format and byteorder, and properly aligned by skipping pad bytes if necessary (according to therules used by the C compiler).

Alternatively, the first character of the format string can be used to indicatethe byte order, size and alignment of the packed data, according to thefollowing table:

If the first character is not one of these, '@' is assumed.

Native byte order is big-endian or little-endian, depending on the hostsystem. For example, Intel x86 and AMD64 (x86-64) are little-endian;Motorola 68000 and PowerPC G5 are big-endian; ARM and Intel Itanium featureswitchable endianness (bi-endian). Use sys.byteorder to check theendianness of your system.

Native size and alignment are determined using the C compiler'ssizeof expression. This is always combined with native byte order.

Standard size depends only on the format character; see the table inthe Format Characters section.

Note the difference between '@' and '=': both use native byte order, butthe size and alignment of the latter is standardized.

The form '!' represents the network byte order which is always big-endianas defined in IETF RFC 1700.

There is no way to indicate non-native byte order (force byte-swapping); use theappropriate choice of '<' or '>'.

Notes:

1. Padding is only automatically added between successive structure members.No padding is added at the beginning or the end of the encoded struct.

2. No padding is added when using non-native size and alignment, e.g.with ‘<', ‘>', ‘=', and ‘!'.

3. To align the end of a structure to the alignment requirement of aparticular type, end the format with the code for that type with a repeatcount of zero. See Examples.

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Format Characters¶

Format characters have the following meaning; the conversion between C andPython values should be obvious given their types. The ‘Standard size' columnrefers to the size of the packed value in bytes when using standard size; thatis, when the format string starts with one of '<', '>', '!' or'='. When using native size, the size of the packed value isplatform-dependent.

Changed in version 3.3: Added support for the 'n' and 'N' formats.

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Changed in version 3.6: Added support for the 'e' format.

Notes:

1. The '?' conversion code corresponds to the _Bool type defined byC99. If this type is not available, it is simulated using a char. Instandard mode, it is always represented by one byte.

2. When attempting to pack a non-integer using any of the integer conversioncodes, if the non-integer has a __index__() method then that method iscalled to convert the argument to an integer before packing.

   Changed in version 3.2: Added use of the __index__() method for non-integers.

3. The 'n' and 'N' conversion codes are only available for the nativesize (selected as the default or with the '@' byte order character).For the standard size, you can use whichever of the other integer formatsfits your application.

4. For the 'f', 'd' and 'e' conversion codes, the packedrepresentation uses the IEEE 754 binary32, binary64 or binary16 format (for'f', 'd' or 'e' respectively), regardless of the floating-pointformat used by the platform.

5. The 'P' format character is only available for the native byte ordering(selected as the default or with the '@' byte order character). The byteorder character '=' chooses to use little- or big-endian ordering basedon the host system. The struct module does not interpret this as nativeordering, so the 'P' format is not available.

6. The IEEE 754 binary16 'half precision' type was introduced in the 2008revision of the IEEE 754 standard. It has a signbit, a 5-bit exponent and 11-bit precision (with 10 bits explicitly stored),and can represent numbers between approximately 6.1e-05 and 6.5e+04at full precision. This type is not widely supported by C compilers: on atypical machine, an unsigned short can be used for storage, but not for mathoperations. See the Wikipedia page on the half-precision floating-pointformat for more information.

A format character may be preceded by an integral repeat count. For example,the format string '4h' means exactly the same as 'hhhh'.

Whitespace characters between formats are ignored; a count and its format mustnot contain whitespace though.

For the 's' format character, the count is interpreted as the length of thebytes, not a repeat count like for the other format characters; for example,'10s' means a single 10-byte string, while '10c' means 10 characters.If a count is not given, it defaults to 1. For packing, the string istruncated or padded with null bytes as appropriate to make it fit. Forunpacking, the resulting bytes object always has exactly the specified numberof bytes. As a special case, '0s' means a single, empty string (while'0c' means 0 characters).

When packing a value x using one of the integer formats ('b','B', 'h', 'H', 'i', 'I', 'l', 'L','q', 'Q'), if x is outside the valid range for that formatthen struct.error is raised.

Changed in version 3.1: Previously, some of the integer formats wrapped out-of-range values andraised DeprecationWarning instead of struct.error.

The 'p' format character encodes a 'Pascal string', meaning a shortvariable-length string stored in a fixed number of bytes, given by the count.The first byte stored is the length of the string, or 255, whichever issmaller. The bytes of the string follow. If the string passed in topack() is too long (longer than the count minus 1), only the leadingcount-1 bytes of the string are stored. If the string is shorter thancount-1, it is padded with null bytes so that exactly count bytes in allare used. Note that for unpack(), the 'p' format character consumescount bytes, but that the string returned can never contain more than 255bytes.

For the '?' format character, the return value is either True orFalse. When packing, the truth value of the argument object is used.Either 0 or 1 in the native or standard bool representation will be packed, andany non-zero value will be True when unpacking.

Examples¶

Note

All examples assume a native byte order, size, and alignment with abig-endian machine.

A basic example of packing/unpacking three integers:

Unpacked fields can be named by assigning them to variables or by wrappingthe result in a named tuple:

The ordering of format characters may have an impact on size since the paddingneeded to satisfy alignment requirements is different:

The following format 'llh0l' specifies two pad bytes at the end, assuminglongs are aligned on 4-byte boundaries:

This only works when native size and alignment are in effect; standard size andalignment does not enforce any alignment.

See also

Packed binary storage of homogeneous data.

Packing and unpacking of XDR data.

Classes¶

The struct module also defines the following type:

Return a new Struct object which writes and reads binary data according tothe format string format. Creating a Struct object once and calling itsmethods is more efficient than calling the struct functions with thesame format since the format string only needs to be compiled once.

Note

The compiled versions of the most recent format strings passed toStruct and the module-level functions are cached, so programsthat use only a few format strings needn't worry about reusing a singleStruct instance.

Compiled Struct objects support the following methods and attributes:

Identical to the pack() function, using the compiled format.(len(result) will equal size.)

Identical to the pack_into() function, using the compiled format.

Identical to the unpack() function, using the compiled format.The buffer's size in bytes must equal size.

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Identical to the unpack_from() function, using the compiled format.The buffer's size in bytes, starting at position offset, must be at leastsize.

Identical to the iter_unpack() function, using the compiled format.The buffer's size in bytes must be a multiple of size.

The format string used to construct this Struct object.

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Changed in version 3.7: The format string type is now str instead of bytes.

The calculated size of the struct (and hence of the bytes object producedby the pack() method) corresponding to format.