大约有 22,000 项符合查询结果（耗时：0.0257秒） [XML]
How can I preview a merge in git?
...l representation of the branches since they were merged last time.
Empty string implies HEAD, so that's why just ..otherbranch instead of HEAD..otherbranch.
The two vs. three dots have slightly different meaning for diff than for the commands that list revisions (log, gitk etc.). For log and othe...
What is the use of “assert” in Python?
...gt;>> assert 2 > 5
Traceback (most recent call last):
File "<string>", line 1, in <fragment>
builtins.AssertionError:
The first statement does nothing, while the second raises an exception. This is the first hint: asserts are useful to check conditions that should be true in...
How to validate an email address in JavaScript
...3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
return re.test(String(email).toLowerCase());
}
Here's the example of regular expresion that accepts unicode:
const re = /^(([^<>()\[\]\.,;:\s@\"]+(\.[^<>()\[\]\.,;:\s@\"]+)*)|(\".+\"))@(([^<>()[\]\.,;:\s@\"]+\.)+[^<&...
How to add a border just on the top side of a UIView
...r borders = [UIView]()
@discardableResult
func addBorder(formats: String...) -> UIView {
let border = UIView(frame: .zero)
border.backgroundColor = color
border.translatesAutoresizingMaskIntoConstraints = false
addSubview(border)
addConstraints(for...
File content into unix variable with newlines
..., it's actually the echo doing this. You need simply put quotes around the string to maintain those newlines:
echo "$testvar"
This wil give the result you want. See the following transcript for a demo:
pax> cat num1.txt ; x=$(cat num1.txt)
line 1
line 2
pax> echo $x ; echo '===' ; echo "$...
How should I call 3 functions in order to execute them one after the other?
...setTimeout here, but:
in this case I've added the code to execute as a string. this is the simplest way to pass a var into your setTimeout-ed function, but purists will complain.
you can also pass a function name without quotes, but no variable can be passed.
your code does not wait for setTime...
Caching a jquery ajax response in javascript/browser
...ier for the cache. Maybe have a better, safer ID (it depends on the object string representation here) ?
// on $.ajax call we could also set an ID in originalOptions
var id = originalOptions.url+ JSON.stringify(originalOptions.data);
options.cache = false;
options.bef...
What does LayoutInflater in Android do?
...t is never be used directly -- use getLayoutInflater() or getSystemService(String) to retrieve a standard LayoutInflater instance that is already hooked up to the current context and correctly configured for the device you are running on. For example:
LayoutInflater inflater = (LayoutInflater)conte...
Jquery selector input[type=text]')
...ntsByClassName, rather than going through $ which does a lot of checking / string parsing of your selector, jQuery isn't famous for its performant library. And I haven't honestly seen an app slowing down because of calling $ one too many, if you have a website that has that problem, please show me, ...
What happens to a detached thread when main() exits?
...
Consider the following code:
#include <iostream>
#include <string>
#include <thread>
#include <chrono>
void thread_fn() {
std::this_thread::sleep_for (std::chrono::seconds(1));
std::cout << "Inside thread function\n";
}
int main()
{
std::thread t1(t...