大约有 3,000 项符合查询结果（耗时：0.0250秒） [XML]
How to color System.out.println output? [duplicate]
...RROR MESSAGE IN RED'
ie, press CTRL+V and then CTRL+[ in order to get a "raw" ESC character when escape interpretation is not available
If done correctly, you should see a ^[. Although it looks like two characters, it is really just one, the ESC character.
You can also press CTRL+V,CTRL+[ in vim i...
Can an html element have multiple ids?
...says no spaces in the identifier:
ID and NAME tokens must begin with a letter ([A-Za-z]) and may be followed by any number of letters, digits ([0-9]), hyphens ("-"), underscores ("_"), colons (":"), and periods (".").
s...
Best way to find if an item is in a JavaScript array? [duplicate]
...fined) {
return this.indexOf(o) !== -1;
} else { // only for raw js object
for(var v in this) {
if( JSON.stringify(this[v]) === JSON.stringify(o)) return true;
}
return false;
},
// writable:false,
// enumerable:fal...
How to allow only numeric (0-9) in HTML inputbox using jQuery?
...l, but i found a anoying "bug". when i use this on my iMac, it allows some letter, like a and e. it seems like the keypad numbers on the pc is letters on the iMac and the Mac keyboard is the same as the regular numbers. anyone know how to make it work on both mac and pc?
– Vo...
Why does pattern matching in Scala not work with variables?
...s a stable identifier. In Scala, these must either start with an uppercase letter, or be surrounded by backticks.
Both of these would be solutions to your problem:
def mMatch(s: String) = {
val target: String = "a"
s match {
case `target` => println("It was" + target)
ca...
Good Free Alternative To MS Access [closed]
...g to keep in mind here is the MS Access product is much more than just the raw database engine. It provides a full application development platform, including form and menu designer, client application language and environment (VBA), and report designer. When you take all those things together, MS A...
WebRTC - scalable live stream broadcasting / multicasting
...Janus. Now Janus decodes the data using its own key and have access to the raw data (that it, RTP packets) and can emit back those packets to each attendee (Janus takes care of encryption for you). And since you put Janus on a server, it has a great upload bandwidth, so you will be able to stream to...
Turn a string into a valid filename?
...> import string
>>> valid_chars = "-_.() %s%s" % (string.ascii_letters, string.digits)
>>> valid_chars
'-_.() abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
>>> filename = "This Is a (valid) - filename%$&$ .txt"
>>> ''.join(c for c in filen...
(Mac) -bash: __git_ps1: command not found
... download git-prompt.sh similarly:
curl -o ~/.git-prompt.sh \
https://raw.githubusercontent.com/git/git/master/contrib/completion/git-prompt.sh
... and add the following line to your ~/.bash_profile:
source ~/.git-prompt.sh
Then your PS1 variable that includes __git_ps1 '%s' should work fi...
What is the most effective way for float and double comparison?
...a.org/wiki/IEEE_floating-point_standard.
//
// Template parameter:
//
// RawType: the raw floating-point type (either float or double)
template <typename RawType>
class FloatingPoint {
public:
// Defines the unsigned integer type that has the same size as the
// floating point number.
...