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UUID max character length
... formal definition of UUID string representations. It's 36 characters (32 hex digits + 4 dashes).
Sounds like you need to figure out where the invalid 60-char IDs are coming from and decide 1) if you want to accept them, and 2) what the max length of those IDs might be based on whatever API is use...
How to change the opacity (alpha, transparency) of an element in a canvas element after it has been
...illStyle = "rgba(255, 255, 255, 0.5)"; does not work. The value must be in hex.
– WebWanderer
Feb 2 '15 at 18:27
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Facebook Android Generate Key Hash
...ter you get the required SHA1 Key
Then goto
http://tomeko.net/online_tools/hex_to_base64.php
and paste your sha1 key
and finally you will get Required HashKey which you can use it to apply on facebook.
share
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Getting a map() to return a list in Python 3.x
I'm trying to map a list into hex, and then use the list elsewhere. In python 2.6, this was easy:
9 Answers
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How to make MySQL handle UTF-8 properly
...ET utf8mb4 on all tables/columns -- except columns that are strictly ascii/hex/country_code/zip_code/etc.
<meta charset charset=UTF-8> if you are outputting to HTML. (Yes the spelling is different here.)
More info ;
UTF8 all the way
The above links provide the "detailed canonical answer is...
关于php的socket初探 - PHP - 清泛IT论坛，有思想、有深度
...通知调用者。
3、多路复用（IO/Multiplexing）：为了提高数据信息在网络通信线路中传输的效率，在一条物理通信线路上建立多条逻辑通信信道，同时传输若干路信号的技术就叫做多路复用技术。对于 Socket 来说，应该说能同时...
CMake使用教程 - C/C++ - 清泛网 - 专注C/C++及内核技术
...ckage）、生成源码包（make package_source）、产生Dashboard显示数据并上传等高级功能，只要在CMakeLists.txt中简单配置，就可以完成很多复杂的功能，包括写测试用例。
如果有嵌套目录，子目录下可以有自己的CMakeLists.txt。
总之，CMak...
Is there any difference between a GUID and a UUID?
...rences. Specifically, some Microsoft GUID docs allow GUIDs to contain any hex digit in any position, while RFC4122 requires certain values for the version and variant fields. Also, [per that same link], GUIDs should be all-upper case, whereas UUIDs should be "output as lower case characters and ar...
从Code Review 谈如何做技术 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...有多大？有多少用户受益？”，回答不清这个问题，没有数据的支持，就不做。所以，产品经理要做很多数据挖拙和用户调研的工作，而不是拍拍脑袋，听极少数的用户抱怨就要开需求了。
2）产品经理也要管理和教育的。你要...
(Built-in) way in JavaScript to check if a string is a valid number
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This fails on hexadecimal numbers (0x12, for example), floats without a leading zero (.42, for example) and negative numbers.
– Ori
Apr 18 '12 at 1:25
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