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Is there any difference between “foo is None” and “foo == None”?
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You may want to read this object identity and equivalence.
The statement 'is' is used for object identity, it checks if objects refer to the same instance (same address in memory).
And the '==' statement refers to equality (same value).
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convert a list of objects from one type to another using lambda expression
I have a foreach loop reading a list of objects of one type and producing a list of objects of a different type. I was told that a lambda expression can achieve the same result.
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How do I format XML in Notepad++?
... When I pasted it in Notepad++ there was a long line of code (difficult to read and work with).
20 Answers
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Get the Highlighted/Selected text
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I already know that you are aware of the following, @TimDown, but it should be noted, that this won't work on textareas in Firefox. This is a known bug.
– Dennis98
Sep 28 '16 at 15:13
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What is a thread exit code?
What exactly is a thread exit code in the Output window while debugging? What information it gives me? Is it somehow useful or just an internal stuff which should not bother me?
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Check if character is number?
... {
return !isNaN(s - parseFloat(s));
}
The comment for this function reads:
// parseFloat NaNs numeric-cast false positives (null|true|false|"")
// ...but misinterprets leading-number strings, particularly hex literals ("0x...")
// subtraction forces infinities to NaN
I think we can ...
How can I scroll to a specific location on the page using jquery?
...r.mozilla.org/en-US/docs/Web/API/Element/scrollIntoView). Think you didn't read the caniuse properly. However, won't be animated. Rather a pretty abrupt jump which isn't always great.
– perry
Jun 16 '17 at 5:45
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Using G++ to compile multiple .cpp and .h files
...do this for output:
./output
But a better solution is to use make file. Read here to know more about make files.
Also make sure that you have added the required .h files in the .cpp files.
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Find out time it took for a python script to complete execution
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Last line should probably read print('It took {0:0.1f} seconds'.format(time.time() - start)) in python 3.x.
– Chris Mueller
Feb 3 '16 at 19:24
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jQuery get selected option value (not the text, but the attribute 'value')
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From what I've read using an ID as a selector is the fastest method.
– Marcus
Oct 26 '12 at 15:35
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