大约有 45,000 项符合查询结果(耗时:0.0749秒) [XML]
Java FileOutputStream Create File if not exists
Is there a way to use FileOutputStream in a way that if a file (String filename) does not exist, then it will create it?
9 ...
Generic TryParse
I am trying to create a generic extension that uses 'TryParse' to check if a string is a given type:
23 Answers
...
How to check if mysql database exists
Is it possible to check if a (MySQL) database exists after having made a connection.
21 Answers
...
How to check if a file contains a specific string using Bash
I want to check if a file contains a specific string or not in bash. I used this script, but it doesn't work:
11 Answers
...
Does Python have a ternary conditional operator?
If Python does not have a ternary conditional operator, is it possible to simulate one using other language constructs?
26 ...
What purpose does a tag serve inside of a tag?
...nit() {
var dependencies = document.getElementById("inline-deps");
if (!dependencies || JS.hasClass(document.body, "deps--loaded")) {
webfontsReady();
} else {
var html = dependencies.innerText || dependencies.textContent;
JS.addClass(document.body, "deps--loaded");
...
How to check if a file is empty in Bash?
I have a file called diff.txt. Want to check if it is empty. Did something like this but couldn't get it working.
10 Answe...
Set cursor position on contentEditable
...arentAnchor && parentAnchor != document.documentElement) {
if(parentAnchor == editable) {
isOrContainsAnchor = true;
}
parentAnchor = parentAnchor.parentNode;
}
while(parentFocus && parentFocus != document.documentElement) {
if(par...
Assign variable in if condition statement, good practice or not? [closed]
... but use a single = instead of == or ===. For example, when you see this:
if (value = someFunction()) {
...
}
you don't know if that's what they meant to do, or if they intended to write this:
if (value == someFunction()) {
...
}
If you really want to do the assignment in place, I woul...
How can I check if an argument is defined when starting/calling a batch file?
...ion, the exit needs a /B argument otherwise CMD.exe will quit.
@echo off
if [%1]==[] goto usage
@echo This should not execute
@echo Done.
goto :eof
:usage
@echo Usage: %0 ^<EnvironmentName^>
exit /B 1
share
...
