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Remove property for all objects in array
...forEach. As you mention prototype, prototype.js also has a shim.
delete is one of the worst "optimization killers". Using it often breaks the performances of your applications. You can't avoid it if you want to really remove a property but you often can either set the property to undefined or just b...
JavaScript checking for null vs. undefined and difference between == and ===
... (a == undefined) // but see note below
...but again, note that the last one is vague; it will also be true if a is null.
Now, despite the above, the usual way to check for those is to use the fact that they're falsey:
if (!a) {
// `a` is falsey, which includes `undefined` and `null`
//...
How does Java handle integer underflows and overflows and how would you check for it?
...can store larger values, e.g. long or maybe java.math.BigInteger. The last one doesn't overflow, practically, the available JVM memory is the limit.
If you happen to be on Java8 already, then you can make use of the new Math#addExact() and Math#subtractExact() methods which will throw an Arithmet...
Why is “except: pass” a bad programming practice?
...me, the file exists). Now imagine we get a IsADirectoryError, or a PermissionError instead. In such cases, we probably do not want to continue; we could still apply our default configuration, but we later won’t be able to save the file. And it’s likely that the user meant to have a custom config...
How to handle code when app is killed by swiping in android?
... the home button and kill the app by swiping it from the recent app list, none of the events like onPause() , onStop() or onDestroy() gets called rather the process is terminated. So if i want my services to stop, kill notifications and unregister listeners, how can i do that? I read quite a fe...
Unique (non-repeating) random numbers in O(1)?
...mbinations from the same initial state, otherwise your output will only be one of N states.
– Seph
Dec 4 '11 at 8:13
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How to remove item from array by value? [duplicate]
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@madeinstefano, one or two examples of the funny (bad) things that would happen?
– Majid Fouladpour
Jul 23 '13 at 22:38
2...
How does the Google “Did you mean?” Algorithm work?
...fer spell correction in every language.
Also this means if overnight everyone start to spell night as "nigth" google would suggest that word instead.
EDIT
@ThomasRutter: Douglas describe it as "statistical machine learning".
They know who correct the query, because they know which query comes...
How can one change the timestamp of an old commit in Git?
...It means that you will have to force push to any remote repository, and anyone who has pulled the commit or any future commits will have to reset and pull, or delete and clone from scratch. As far as I know, there is no method that gets around this.
– EriF89
Se...
How to enable PHP's openssl extension to install Composer?
... getting a warning message for not enabling openssl which I had already done in WAMP.
18 Answers
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