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TransactionManagementError “You can't execute queries until the end of the 'atomic' block” while usi
...ementError when trying to save a Django User model instance and in its post_save signal, I'm saving some models that have the user as the foreign key.
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Animate scrollTop not working in firefox
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Firefox places the overflow at the html level, unless specifically styled to behave differently.
To get it to work in Firefox, use
$('body,html').animate( ... );
Working example
The CSS solution would be to set the following styles:
html { overflow: hidden; height: 100%; }
body { ...
How do I merge a git tag onto a branch
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Is there a way to merge all tags at once?
– ComFreek
Aug 18 '19 at 12:22
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Python set to list
...k that you didn't overwrite list by accident:
>>> assert list == __builtins__.list
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Get the current git hash in a Python script
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git describe --always will fallback to the last commit if no tags are found
– Leonardo
Mar 6 '15 at 16:38
5
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Python: using a recursive algorithm as a generator
...h a natural recursive solution. Now it happens that, even for relatively small input, the sequences are several thousands, thus I would prefer to use my algorithm as a generator instead of using it to fill a list with all the sequences.
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How can I get last characters of a string
...tring method .substr() combined with the .length property.
var id = "ctl03_Tabs1";
var lastFive = id.substr(id.length - 5); // => "Tabs1"
var lastChar = id.substr(id.length - 1); // => "1"
This gets the characters starting at id.length - 5 and, since the second argument for .substr() is omi...
How to convert a String to CharSequence?
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This answers both. Poster first trivially resolves the String -> CharSequence problem by explaining that a String IS a CharSequence. Then poster answers how to go from CharSequence to String.
– Alex A.
Nov 8 '13 at 23:05...
this.setState isn't merging states as I would expect
...construct a new state and then call setState() on that:
var newSelected = _.extend({}, this.state.selected);
newSelected.name = 'Barfoo';
this.setState({ selected: newSelected });
I've used function _.extend() function (from underscore.js library) here to prevent modification to the existing sele...
Generating a random password in php
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Security warning: rand() is not a cryptographically secure pseudorandom number generator. Look elsewhere for generating a cryptographically secure pseudorandom string in PHP.
Try this (use strlen instead of count, because count on a string is always 1):
function random...