大约有 31,000 项符合查询结果（耗时：0.0491秒） [XML]
How can I check if a command exists in a shell script? [duplicate]
I am writing my first shell script. In my script I would like to check if a certain command exists, and if not, install the executable. How would I check if this command exists?
...
What is the javascript filename naming convention? [closed]
... or modified files
Examples:
jquery-1.4.2.min.js
jquery.plugin-0.1.js
myapp.invoice.js
share
|
improve this answer
|
follow
|
...
Is the SQL WHERE clause short-circuit evaluated?
... for me, that makes it canonically ambiguous.
because at least then I know my code will work. And more importantly, so will those who come after me, so I'm not setting them up to worry through the same question over and over again.
I write often enough for several DBMS products, and I don't want to...
How do I compare two DateTime objects in PHP 5.2.8?
...he following two methods of the DateTime object would both seem to solve my problem:
7 Answers
...
How do I attach events to dynamic HTML elements with jQuery? [duplicate]
...me jQuery code that attaches an event handler to all elements with class .myclass .
8 Answers
...
android: move a view on touch move (ACTION_MOVE)
...uch the container and I move the finger, I want to move the view to follow my finger.
11 Answers
...
Removing an activity from the history stack
My app shows a signup activity the first time the user runs the app, looks like:
15 Answers
...
Most efficient T-SQL way to pad a varchar on the left to a certain length?
...
+1 Was puzzling over why my char(6) wasn't padding correctly, and the RTRIM on the input variable saved me some head scratching
– jkelley
Apr 26 '11 at 18:16
...
How do I find the .NET version?
...ce but doesn't show the 4.5, 4.6 and 4.7 frameworks which are installed on my Windows 7 machine:(
– Zeek2
Jul 25 '17 at 10:35
...
switch case statement error: case expressions must be constant expression
My switch-case statement works perfectly fine yesterday. But when I run the code earlier this morning eclipse gave me an error underlining the case statements in color red and says: case expressions must be constant expression, it is constant I don't know what happened. Here's my code below:
...