大约有 44,000 项符合查询结果（耗时：0.0254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
...
Remove not alphanumeric characters from string
...xample that captures every key I could find on the keyboard:
var string = '123abcABC-_*(!@#$%^&*()_-={}[]:\"<>,.?/~`';
var stripped = string.replace(/[^A-Za-z0-9]/g, '');
console.log(stripped);
Outputs: '123abcABC'.
...
Finding out whether a string is numeric or not
...
this is true for @"231.123" so: // newString consists only of the digits 0 through 9 and the . character
– Nicolas Tyler
Nov 14 '13 at 8:40
...
Regex Email validation
...ht, fail to catch at least two invalid formats: "Abc.@example.com" , "Abc..123@example.com"
– sean717
Aug 22 '12 at 5:22
...
Sorting a list using Lambda/Linq to objects
... answered Jan 2 '13 at 16:32
gls123gls123
4,89922 gold badges2424 silver badges2626 bronze badges
...
Please explain some of Paul Graham's points on Lisp
...)
;; this is the interesting bit:
(println (str/replace-re #"\d+" "FOO" "a123b4c56"))
This snippet of Clojure code prints out aFOObFOOcFOO. Note that Clojure arguably does not fully satisfy the fourth point on your list, since read-time is not really open to user code; I will discuss what it would...
Insert all values of a table into another table in SQL
...dited Feb 26 '14 at 1:12
hichris123
9,5151212 gold badges5050 silver badges6666 bronze badges
answered Apr 21 '10 at 9:35
...
为AppInventor2开发拓展(Extension) · App Inventor 2 中文网
...已下载好的工程源码，关注页面底部公众号（或搜索“fun123cn”关注），回复“源码”即可免费下载。
代码编写
采用自己较为熟悉的java开发环境就行，这里推荐使用VSCode，拓展目录在 appinventor-sources/appinventor/components ，测试代...
Why should I use Hamcrest-Matcher and assertThat() instead of traditional assertXXX()-Methods
...w advantages over hamcrest such as:
they are more readable
(assertEquals(123, actual); // reads "assert equals 123 is actual" vs
assertThat(actual).isEqualTo(123); // reads "assert that actual is equal to 123")
they are discoverable (you can make autocompletion work with any IDE).
Some examples
...
How do I convert a string to a number in PHP?
...
honzasp is right, for example in JavaScript typeof('123'+0) gives 'string', because '123'+0 gives '1230'.
– Oriol
Feb 24 '13 at 21:01
5
...