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Test if something is not undefined in JavaScript
...eryone seems to think it is). If you want to, you could create a variable called undefined and then this check will be incorrect. The only correct way is to check (typeof myVar !== 'undefined').
– BadHorsie
Jun 20 '16 at 14:12
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How to match any non white space character except a particular one?
...The above answer will only return the first match of a string. If you want all matches to be returned add the g modifier. /[^\s\\]/g
– Ben Carp
Dec 1 '19 at 12:13
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Merge up to a specific commit
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Sure, being in master branch all you need to do is:
git merge <commit-id>
where commit-id is hash of the last commit from newbranch that you want to get in your master branch.
You can find out more about any git command by doing git help <co...
Lua string to int
...t'll convert "10" to integer and then add 0 to it. (The lack of clarity is all the more reason to use tonumber instead, though!)
– Rena
Jun 28 '15 at 6:32
16
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Is duplicated code more tolerable in unit tests?
...on is in the code manipulating the SUT, then ask yourself why multiple so-called “unit” tests are exercising the exact same functionality.
If the duplication is in the assertions, then perhaps you need some Custom Assertions. For example, if multiple tests have a string of assertions like:
as...
click() event is calling twice in jquery
I setup a link element and called its click event in jquery but the click event is calling twice, please see below the code of jquery.
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Getting value of HTML Checkbox from onclick/onchange events
...Live example | Source
The longer answer:
The change event handler isn't called until the checked state has been updated (live example | source), but because (as Tim Büthe points out in the comments) IE doesn't fire the change event until the checkbox loses focus, you don't get the notification pr...
Is there a perfect algorithm for chess? [closed]
...of the state space that it would have to search. It's finite, it's just REALLY big.
That's why chess falls back on heuristics -- the state space is too huge (but finite). To even enumerate -- much less search for every perfect move along every course of every possible game -- would be a very, ver...
STAThread and multithreading
...ading is a COM concept; if you're not using COM, and none of the APIs you call use COM "under the covers", then you don't need to worry about apartments.
If you do need to be aware of apartments, then the details can get a little complicated; a probably-oversimplified version is that COM objects ta...
How do I limit task tags to current project in Eclipse?
Eclipse currently shows the task tags ( // TODO ) from all open projects. I would be grateful if anyone could point out the preference, where I could restrict the scope of tasks displayed (e.g. only tasks from current project).
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