大约有 31,500 项符合查询结果（耗时：0.0486秒） [XML]
Paste a multi-line Java String in Eclipse [duplicate]
...
I installed this in Juno, restarted but it does nothing. The combo doesn't do anything and neither can I find an item in the context menu :-(
– Daniel Gerson
Jun 20 '13 at 20:03
...
Save image from URL by paperclip
...
This is potentially insecure because a user could call user.picture_from_url('/etc/password'). It's probably fine in most situations though.
– David Tuite
Oct 11 '13 at 9:16
...
MySQL Cannot drop index needed in a foreign key constraint
...
You have to drop the foreign key. Foreign keys in MySQL automatically create an index on the table (There was a SO Question on the topic).
ALTER TABLE mytable DROP FOREIGN KEY mytable_ibfk_1 ;
share
|
...
How to add elements to an empty array in PHP?
...ration, but it also doesn't impose the performance overhead of a function call, which array_push() would. Edit: But, great answer. Effectively the same, and majority of uses won't even notice a performance difference, but helps to know those nuances.
– Mattygabe
...
How do I make my string comparison case insensitive?
... Just be aware that the two solutions are not necessarily identical for all locales. String#equalsIgnoreCase is not using locale specific casing rules, while String#toLowerCase and #toUpperCase do.
– jarnbjo
Feb 8 '10 at 9:48
...
Python extract pattern matches
...h a standard python REPL, the last result is stored in a special variable called _. It isn't valid outside anywhere else.
– UltraInstinct
Mar 13 '19 at 2:25
...
How to delete a file via PHP?
...
Check your permissions first of all on the file, to make sure you can a) see it from your script, and b) are able to delete it.
You can also use a path calculated from the directory you're currently running the script in, eg:
unlink(dirname(__FILE__) . "/...
How to prevent form from being submitted?
...'t be executed and the form will be submitted either way. You should also call preventDefault to prevent the default form action for Ajax form submissions.
function mySubmitFunction(e) {
e.preventDefault();
someBug();
return false;
}
In this case, even with the bug the form won't submit!
A...
How do I pass a class as a parameter in Java?
...
public void callingMethod(Class neededClass) {
//Cast the class to the class you need
//and call your method in the class
((ClassBeingCalled)neededClass).methodOfClass();
}
To call the method, you call it this way:
callingM...
How to copy a java.util.List into another java.util.List
...rch for copying a list suggested me to use Collections.copy() method. In all the examples I saw, the destination list was supposed to contain the exact number of items for the copying to take place.
...