大约有 12,000 项符合查询结果（耗时：0.0233秒） [XML]
Using bitwise OR 0 to floor a number
...and only an integer (as in the Elm source code @dwayne-crooks linked). And foo = foo | 0 could be used to coerce any value to an integer (where 32-bit numbers are truncated and all non-numbers become 0).
– David Michael Gregg
Jan 3 '18 at 11:31
...
JavaScript regex multiline flag doesn't work
...ipt 2018.
https://github.com/tc39/proposal-regexp-dotall-flag
const re = /foo.bar/s; // Or, `const re = new RegExp('foo.bar', 's');`.
re.test('foo\nbar');
// → true
re.dotAll
// → true
re.flags
// → 's'
share
...
Create list of single item repeated N times
... change one of them, they all change because they're all the same object:
foo = [[]] * 4
foo[0].append('x')
foo now returns:
[['x'], ['x'], ['x'], ['x']]
But with immutable objects, you can make it work because you change the reference, not the object:
>>> l = [0] * 4
>>> l[...
Good ways to manage a changelog using git?
...l create a "change log" containing lots of entries like "Fixed spelling of fooMethod in ZModule" and "Refactor XModule to use new version of XYLibarary". Your users don't care about that. They want to know what changes were made from their perspective as users, not your perspective as a developer. A...
SVN - Checksum mismatch while updating
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Note that you can "svn update --set-depth exclude file.foo" and "svn update file.foo" to operate on one file only, not a whole folder.
– Sinus Mackowaty
Dec 20 '19 at 17:28
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Sharing Test code in Maven
...ency>
<groupId>com.myco.app</groupId>
<artifactId>foo</artifactId>
<version>1.0-SNAPSHOT</version>
<type>test-jar</type>
<scope>test</scope>
</dependency>
...
In plain English, what does “git reset” do?
... shouldn't be too surprising.
For example, git reset other-branch path/to/foo resets everything in path/to/foo to its state in other-branch, git reset -- . resets the current directory to its state in HEAD, and a simple git reset resets everything to its state in HEAD.
The main work tree and index...
What's the most appropriate HTTP status code for an “item not found” error page
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What if I want to update foo object with id=1 and there is no foo in the database with this id?
– valijon
Nov 15 '18 at 10:03
1
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Should switch statements always contain a default clause?
...ome languages you can assign integer values to enums. In C++ enum MyEnum { FOO = 0, BAR = 1 }; MyEnum value = (MyEnum)2; makes a valid MyEnum instance that is not equal to FOO or BAR. If either of these issues would cause an error in your project, a default case will help you find the error very qui...
What is the opposite of evt.preventDefault();
...
I would suggest the following pattern:
document.getElementById("foo").onsubmit = function(e) {
if (document.getElementById("test").value == "test") {
return true;
} else {
e.preventDefault();
}
}
<form id="foo">
<input id="test"/>
<input...