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Django Forms: if not valid, show form with error message
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yes you got it right now. If you have not rendered the form manually then the errors will automatically shown for each field.
– Aamir Adnan
Feb 1 '13 at 14:00
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How do you read CSS rule values with JavaScript?
...rmat you'd see in an inline style. I'd like to be able to do this without knowing what is contained in a particular rule, so I can't just pull them out by style name (like .style.width etc.)
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What is a covariant return type?
...n explicit reference to a MyFoo object will be able to invoke clone() and know (without casting) that the return value is an instance of MyFoo. Without covariant return types, the overridden method in MyFoo would have to be declared to return Object - and so calling code would have to explicitly do...
Send POST data on redirect with JavaScript/jQuery? [duplicate]
...o stop where the other began, ignoring all of the inputs that followed. I know this shouldn't happen, but there you go. The above method is nice when you want to 'redirect' with POST data from a piece of JS. Although I can't really shake feeling dirty when I do it this way ;).
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C++ Structure Initialization
... Really bad idea: add one member to your address and you'll never know of all the places that create an address and now do not initialize your new member.
– mystery_doctor
May 7 '19 at 6:13
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Finding the type of an object in C++
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Good if you really don't know what your object is. The accepted answer assumes you do.
– unludo
Feb 28 '12 at 16:01
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How to resolve symbolic links in a shell script
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realpath is now (Jan 2012) part of coreutils and backwards compatible with the debian and BSD variant
– pixelbeat
Apr 16 '12 at 7:43
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How do I truncate a .NET string?
...Length <= maxLength ? value : value.Substring(0, maxLength);
}
}
Now we can write:
var someString = "...";
someString = someString.Truncate(2);
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How to get height of entire document with JavaScript?
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hm - now I test it and it works - i dont know why - so ok :) - i delete my previous comment
– Kamil Kiełczewski
Jun 28 '17 at 16:26
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Standard deviation of a list
... function _sum rather than the built-in sum which I've used in its place.
Now we have for example:
>>> mean([1, 2, 3])
2.0
>>> stddev([1, 2, 3]) # population standard deviation
0.816496580927726
>>> stddev([1, 2, 3], ddof=1) # sample standard deviation
0.1
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