大约有 47,000 项符合查询结果（耗时：0.0755秒） [XML]
Create an enum with string values
...n use string literal types to provide a reliable and safe experience for named string values (which is partially what enums are used for).
type Options = "hello" | "world";
var foo: Options;
foo = "hello"; // Okay
foo = "asdf"; // Error!
More : https://www.typescriptlang.org/docs/handbook/advan...
Replace string within file contents
...re are no downvotes, I simply did not upvote. But giving out answers to homework is not the right way to do this
– BlueRaja - Danny Pflughoeft
Nov 8 '10 at 22:14
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Is a GUID unique 100% of the time?
Is a GUID unique 100% of the time?
22 Answers
22
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Collisions when generating UUIDs in JavaScript?
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My best guess is that Math.random() is broken on your system for some reason (bizarre as that sounds). This is the first report I've seen of anyone getting collisions.
node-uuid has a test harness that you can use to test the distribution of hex digits in that code. If that looks okay then...
How to get the start time of a long-running Linux process?
Is it possible to get the start time of an old running process? It seems that ps will report the date (not the time) if it wasn't started today, and only the year if it wasn't started this year. Is the precision lost forever for old processes?
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Fragments within Fragments
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Nested fragments are not currently supported. Trying to put a fragment within the UI of another fragment will result in undefined and likely broken behavior.
Update: Nested fragments are supported as of Android 4.2 (and Android Sup...
Creating a UICollectionView programmatically
I'm looking for a guide or tutorial that will show me how to set up a simple UICollectionView using only code.
12 Answers
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Git/GitHub can't push to master
..., which is indicated by your use of the URL beginning git://. As the error message says, if you want to push, you should use either the SSH URL git@github.com:my_user_name/my_repo.git or the "smart HTTP" protocol by using the https:// URL that GitHub shows you for your repository.
(Update: to my su...
How to recursively download a folder via FTP on Linux [closed]
...le for mirroring. It is currently equivalent to -r -N -l inf.
If you've some special characters in the credential details, you can specify the --user and --password arguments to get it to work. Example with custom login with specific characters:
wget -r --user="user@login" --password="Pa$$wo|^D" f...
How to output in CLI during execution of PHP Unit tests?
...hat works much better than the --verbose command line option:
class TestSomething extends PHPUnit_Framework_TestCase {
function testSomething() {
$myDebugVar = array(1, 2, 3);
fwrite(STDERR, print_r($myDebugVar, TRUE));
}
}
This lets you dump anything to your console at an...