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SQL keys, MUL vs PRI vs UNI
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For Mul, this was also helpful documentation to me - http://grokbase.com/t/mysql/mysql/9987k2ew41/key-field-mul-newbie-question
"MUL means that the key allows multiple rows to have the same value.
That is, it's not a UNIque key."
For example, let's say you have two models, Po...
What is the maximum length of a Push Notification alert text?
...inary interface, maximum payload size is 2KB (2048 bytes).
When using the HTTP/2 provider API, maximum payload size is 4KB (4096 bytes).
For Voice over Internet Protocol (VoIP) notifications, the maximum size is 5KB (5120 bytes)
OLD ANSWER:
According to the apple doc the payload for iOS 8 is 2 kil...
SHA1 vs md5 vs SHA256: which to use for a PHP login?
...h (BCrypt), Crypt/SHA256 or Crypt/SHA512. Or at least Crypt/MD5 (PHK). See www.php.net/manual/en/function.crypt.php
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Django template tag to truncate text
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You should write a custom template filter: http://docs.djangoproject.com/en/dev/howto/custom-template-tags/#writing-custom-template-filters
Have a look at how truncatewords is built in django.utils.text
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C# Float expression: strange behavior when casting the result float to int
... in that case there is no truncate operation but only approximation.
See http://msdn.microsoft.com/en-us/library/system.single.aspx
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Delete local Git branches after deleting them on the remote repo
...c-testing
remotes/origin/master
remotes/origin/test-services
Reference:
http://git-scm.com/book/en/v2/Git-Branching-Remote-Branches
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How can I analyze Python code to identify problematic areas?
...f plugins for regular checks and pre-commit hook. I'd actually recommend https://flakehell.readthedocs.io/config.html these days though, as it's execution model is much more robust and configurable.
– DylanYoung
Jul 7 at 18:39
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Why can't stash be applied to the working directory?
... you can't just apply back. I must admit don’t fully understand why. See http://git.661346.n2.nabble.com/stash-refuses-to-pop-td7453780.html for some discussion.
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What is the difference between Scope_Identity(), Identity(), @@Identity, and Ident_Current()?
...ring a column in a table as an identity column.
For more reference, see: http://msdn.microsoft.com/en-us/library/ms187342.aspx.
To summarize: if you are inserting rows, and you want to know the value of the identity column for the row you just inserted, always use SCOPE_IDENTITY().
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Replacing spaces with underscores in JavaScript?
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I created JS performance test for it http://jsperf.com/split-and-join-vs-replace2
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