大约有 11,400 项符合查询结果（耗时：0.0296秒） [XML]
Change select box option background color
I have a select box and I'm trying to change the background color of the options when the select box has been clicked and shows all the options.
...
How would you implement an LRU cache in Java?
...this question that I want to implement my own using just the SDK (learning by doing). Given that the cache will be used in a multithreaded environment, which datastructures would you use? I've already implemented one using LinkedHashMap and Collections#synchronizedMap , but I'm curious if any of ...
“Least Astonishment” and the Mutable Default Argument
Anyone tinkering with Python long enough has been bitten (or torn to pieces) by the following issue:
31 Answers
...
Calling dynamic function with dynamic number of parameters [duplicate]
I’m looking for a trick about this. I know how to call a dynamic, arbitrary function in JavaScript, passing specific parameters, something like this:
...
AWK: Access captured group from line pattern
...
That was a stroll down memory lane...
I replaced awk by perl a long time ago.
Apparently the AWK regular expression engine does not capture its groups.
you might consider using something like :
perl -n -e'/test(\d+)/ && print $1'
the -n flag causes perl to loop ove...
“loop:” in Java code. What is this, and why does it compile?
...
It is not a keyword it is a label.
Usage:
label1:
for (; ; ) {
label2:
for (; ; ) {
if (condition1) {
// break outer loop
break label1;
}
if (condition2) {
...
How do I clear/delete the current line in terminal?
...
You can use Ctrl+U to clear up to the beginning.
You can use Ctrl+W to delete just a word.
You can also use Ctrl+C to cancel.
If you want to keep the history, you can use Alt+Shift+# to make it a comment.
Bash Emacs Editing Mode Cheat Sheet
...
Array to String PHP?
What is the best method for converting a PHP array into a string?
I have the variable $type which is an array of types.
...
Are Stored Procedures more efficient, in general, than inline statements on modern RDBMS's? [duplica
...this is a general look at stored procedures not regulated to a specific
DBMS. Some DBMS (and even, different
versions of the same DBMS!) may operate
contrary to this, so you'll want to
double-check with your target DBMS
before assuming all of this still holds.
I've been a Sybase ASE, ...
How to replace multiple strings in a file using PowerShell
...nces of strings within this file, and I tried using PowerShell to do the job.
5 Answers
...