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Why are hexadecimal numbers prefixed with 0x?
...s dealing with a constant (and not an identifier/reserved word). Something is still needed to specify the number base: the x is an arbitrary choice.
Long story: In the 60's, the prevalent programming number systems were decimal and octal — mainframes had 12, 24 or 36 bits per byte, which is nicel...
SQLAlchemy default DateTime
This is my declarative model:
6 Answers
6
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How to allow only numeric (0-9) in HTML inputbox using jQuery?
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Note: This is an updated answer. Comments below refer to an old version which messed around with keycodes.
jQuery
Try it yourself on JSFiddle.
There is no native jQuery implementation for this, but you can filter the input values ...
Fastest way to check if a value exists in a list
What is the fastest way to know if a value exists in a list (a list with millions of values in it) and what its index is?
1...
Does Git publicly expose my e-mail address?
...up as:
Author: Joe White <joewhite@mysite.com>
So the information is available to anyone with a copy of the repo, since it acts as an identifier.
Your email probably won't be visible to spambots, though, unless you use Gitweb, or a service like GitHub, to make your repo available through a...
git clone through ssh
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This is possibly unrelated directly to the question; but one mistake I just made myself, and I see in the OP, is the URL specification ssh://user@server:/GitRepos/myproject.git - namely, you have both a colon :, and a forward s...
Does Python support multithreading? Can it speed up execution time?
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The GIL does not prevent threading. All the GIL does is make sure only one thread is executing Python code at a time; control still switches between threads.
What the GIL prevents then, is making use of more than one CPU core or separate CPUs to run threads in parallel.
This ...
How to declare a structure in a header that is to be used by multiple files in c?
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if this structure is to be used by some other file func.c how to do it?
When a type is used in a file (i.e. func.c file), it must be visible. The very worst way to do it is copy paste it in each source file needed it.
The right wa...
What's the most efficient test of whether a PHP string ends with another string?
...dard PHP way to test whether a string $str ends with a substring $test is:
13 Answers
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Modifying location.hash without page scrolling
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Step 1: You need to defuse the node ID, until the hash has been set. This is done by removing the ID off the node while the hash is being set, and then adding it back on.
hash = hash.replace( /^#/, '' );
var node = $( '#' + hash );
if ( node.length ) {
node.attr( 'id', '' );
}
document.locati...