大约有 42,000 项符合查询结果（耗时：0.0320秒） [XML]
Double vs single quotes
...ring:
This regex pattern will work because passed within single-quotes:
"123 ABC".match('\d')
=> #<MatchData "1">
This regex pattern will fail because passed within double-quotes (you would have to double-escape it to get it to work):
"123 ABC".match("\d")
=> nil
...
Replace multiple characters in one replace call
... double click/cscript/wscript: var chars = {a:'1', b:'2', c:'3'}; var s = '123abc123'; var u = s.replace(/[abc]/g, function(m) { return chars[m]; }); WScript.echo(u);
– Dmitry
Jun 15 '18 at 20:52
...
Press alt + numeric in bash and you get (arg [numeric]) what is that?
... + numeric and then you press a character, you'll get num caracters: (arg: 123) + a -> 123 times "a"
share
|
improve this answer
|
follow
|
...
How to create a .NET DateTime from ISO 8601 format
... Doesn't work for me with fractional digits. 2018-06-19T14:56:14.123Z is parsed as local time, not UTC. I use CultureInfo.InvariantCulture instead of null.
– Erik Hart
Jun 19 '18 at 12:46
...
How to convert a ruby hash object to JSON?
...json/ext' # to use the C based extension instead of json/pure
puts {hash: 123}.to_json
share
|
improve this answer
|
follow
|
...
Call a Server-side Method on a Resource in a RESTful Way
...a RESTful ordering service where orders are at URIs like example.com/order/123.
Now say we want to cancel an order, how are we gonna do it? One may be tempted to think that is a "cancellation" "action" and design it as POST example.com/order/123?do=cancel.
That is not RESTful, as we talked above....
How to force R to use a specified factor level as reference in a regression?
...
See the relevel() function. Here is an example:
set.seed(123)
x <- rnorm(100)
DF <- data.frame(x = x,
y = 4 + (1.5*x) + rnorm(100, sd = 2),
b = gl(5, 20))
head(DF)
str(DF)
m1 <- lm(y ~ x + b, data = DF)
summary(m1)
Now alter the factor ...
How to pass macro definition from “make” command line arguments (-D) to C source code?
...(CPPFLAGS) $(CXXFLAGS) -c
One would use the command make CPPFLAGS=-Dvar=123 to define the desired macro.
More info
Variables Used by Implicit Rules
Catalogue of Built-In Rules
share
|
improve...
How to get a list of installed android applications and pick one to run
...ng with a server. Is there any guidelines?
– dowjones123
Jun 30 '15 at 20:07
1
@dowjones123 Did u...
Converting A String To Hexadecimal In Java
I am trying to convert a string like "testing123" into hexadecimal form in java. I am currently using BlueJ.
21 Answers
...