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How do I do a Date comparison in Javascript? [duplicate]
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if (date1.getTime() > date2.getTime()) {
alert("The first date is after the second date!");
}
Reference to Date object
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How do I check to see if a value is an integer in MySQL?
...tions to create integers from values, but is there any way to check to see if a value is an integer? Something like is_int() in PHP is what I am looking for.
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Is there any performance gain in indexing a boolean field?
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Not really. You should think about it like a book. If there were only 3 kinds of words in a book and you index all of them, you would have the same number of index pages as normal pages.
There would be a performance gain if there are relatively few records of one value. For...
Prevent users from submitting a form by hitting Enter
...s
$(document).ready(function() {
$(window).keydown(function(event){
if(event.keyCode == 13) {
event.preventDefault();
return false;
}
});
});
In reading the comments on the original post, to make it more usable and allow people to press Enter if they have completed all the...
Is string in array?
What would be the best way to look in a string[] to see if it contains a element. This was my first shot at it. But perhaps there is something that I am overlooking. The array size will be no larger than 200 elements.
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ReactJS - Does render get called any time “setState” is called?
...urns true to prevent
subtle bugs when the state is mutated in place, but if you are careful to
always treat the state as immutable and to read-only from props and state
in render() then you can override shouldComponentUpdate with an
implementation that compares the old props and state to the...
JavaScript OR (||) variable assignment explanation
...mind the 'gotcha' which is that the last one will always get assigned even if they're all undefined, null or false. Setting something you know isn't false, null, or undefined at the end of the chain is a good way to signal nothing was found.
– Erik Reppen
Aug ...
How to display a specific user's commits in svn log?
How to display a specific user's commits in svn? I didn't find any switches for that for svn log.
11 Answers
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Why use a ReentrantLock if one can use synchronized(this)?
I'm trying to understand what makes the lock in concurrency so important if one can use synchronized (this) . In the dummy code below, I can do either:
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Delete commits from a branch in Git
...back up to, and then do this:
git reset --hard <sha1-commit-id>
If you already pushed it, you will need to do a force push to get rid of it...
git push origin HEAD --force
However, if others may have pulled it, then you would be better off starting a new branch. Because when they pull...