大约有 47,000 项符合查询结果（耗时：0.0600秒） [XML]
Will using 'var' affect performance?
...ate 8 Years Later
I need to update this as my understanding has changed. I now believe it may be possible for var to affect performance in the situation where a method returns an interface, but you would have used an exact type. For example, if you have this method:
IList<int> Foo()
{
retu...
How to set commands output as a variable in a batch file
...ile name, you can use your double quotes without screwing up the command.
Now if your output will contain multiple lines, you can do this
SETLOCAL ENABLEDELAYEDEXPANSION
SET count=1
FOR /F "tokens=* USEBACKQ" %%F IN (`command`) DO (
SET var!count!=%%F
SET /a count=!count!+1
)
ECHO %var1%
ECHO ...
How do you make an element “flash” in jQuery
...
Note that all modern browsers now support the regular @keyframes and animation rules, so there's no need to use any prefixed versions besides maybe -webkit- (for the Blackberry browser).
– coredumperror
Oct 16 '17 at...
What is setup.py?
...
I would appreciate if you share your knowledge on how to create or handle this modules? For example, how to create a basic module, or how to test a script on ./mymodule/bin which imports from ./mymodule/libs/
– Paulo Oliveira
...
Using boolean values in C
...PT_OFF false
void foo(bool option) { ... }
In either case, the call site now looks like
foo(OPT_ON);
foo(OPT_OFF);
which the reader has at least a chance of understanding without dredging up the definition of foo.
share...
How to split a String by space
...provides a solution. It is far from optimal to rely on regex for this, but now that Java has 8bit / 16bit byte representation, an efficient solution for this becomes quite long.
public class SplitStringTest
{
static final Pattern TRIM_UNICODE_PATTERN = Pattern.compile("^\\p{Blank}*(.*)\\p{Blank}...
What is the difference between screenX/Y, clientX/Y and pageX/Y?
...he link to w3schools seems to be only available over the reference section now: w3schools.com/jsref/tryit.asp?filename=try_dom_event_clientxy
– valid
Jul 10 '14 at 11:21
...
Changing user agent on urllib2.urlopen
...n would just do urllib.urlopen(req) fine but either way, this works and I know how to use it in python 3 now.
– jamescampbell
May 31 '15 at 0:37
...
Leaflet - How to find existing markers, and delete markers?
...de API that is included for the tiles in this example seems to be inactive now. Here is a fork that is the exact same, but uses mapquest tile server instead of cloudmade, so no API key needed. jsfiddle.net/nqDKU
– FoamyGuy
Apr 16 '14 at 0:18
...
How to send HTTP request in java? [duplicate]
...
I know others will recommend Apache's http-client, but it adds complexity (i.e., more things that can go wrong) that is rarely warranted. For a simple task, java.net.URL will do.
URL url = new URL("http://www.y.com/url");
Input...