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django MultiValueDictKeyError error, how do I deal with it
... on standard dicts and is a way to fetch a value while providing a default if it does not exist.
is_private = request.POST.get('is_private', False)
Generally,
my_var = dict.get(<key>, <default>)
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Why does Javascript's regex.exec() not always return the same value? [duplicate]
...
A JavaScript RegExp object is stateful.
When the regex is global, if you call a method on the same regex object, it will start from the index past the end of the last match.
When no more matches are found, the index is reset to 0 automatically.
To reset it manually, set the lastIndex pr...
Changing the interval of SetInterval while it's running
...llback = function(tick, counter) {
return function() {
if (--tick >= 0) {
window.setTimeout(internalCallback, ++counter * factor);
callback();
}
}
}(times, 0);
window.setTimeout(internalCallback, factor);
};
// cons...
XPath to find elements that does not have an id or class
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That will give you all tr elements lacking both id and class attributes. If you want all tr elements lacking one of the two, use or instead of and:
//tr[not(@id) or not(@class)]
When attributes and elements are used in this way, if the attribute or element has a value it is treated as if it's t...
How do I read an attribute on a class at runtime?
...ainNameAttribute), true
).FirstOrDefault() as DomainNameAttribute;
if (dnAttribute != null)
{
return dnAttribute.Name;
}
return null;
}
UPDATE:
This method could be further generalized to work with any attribute:
public static class AttributeExtensions
{
public ...
MySql : Grant read only options?
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If there is any single privilege that stands for ALL READ operations on database.
It depends on how you define "all read."
"Reading" from tables and views is the SELECT privilege. If that's what you mean by "all read" then...
Use PHP composer to clone git repo
...S TO THE REPOSITORY?
Yes?
DOES THE REPOSITORY HAVE A composer.json FILE
If you have a repository you can write to: Add a composer.json file, or fix the existing one, and DON'T use the solution below.
Go to @igorw 's answer
ONLY USE THIS IF YOU DON'T HAVE A REPOSITORY
OR IF THE REPOSITORY DOES N...
How to trim a file extension from a String in JavaScript?
... file name (Let's assume the file name only contains [a-zA-Z0-9-_] to simplify.).
23 Answers
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How to find unused images in an Xcode project?
...'`
find . -iname '*.png' | while read png
do
name=`basename $png`
if ! grep -qhs "$name" "$PROJ"; then
echo "$png is not referenced"
fi
done
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Remove an onclick listener
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i wonder if listeners cause memory allocation ? Do we need to free them ? Will that raise performance of app ?
– alicanbatur
Nov 4 '13 at 11:42
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