大约有 16,000 项符合查询结果(耗时:0.0289秒) [XML]
Sending Arguments To Background Worker?
Let's say I want to sent an int parameter to a background worker, how can this be accomplished?
8 Answers
...
How to remove last n characters from every element in the R vector
...hat I would do. I hope it's what you're looking for.
char_array = c("foo_bar","bar_foo","apple","beer")
a = data.frame("data"=char_array,"data2"=1:4)
a$data = substr(a$data,1,nchar(a$data)-3)
a should now contain:
data data2
1 foo_ 1
2 bar_ 2
3 ap 3
4 b 4
...
npm - how to show the latest version of a package
How do I use npm to show the latest version of a module? I am expecting something like npm --latest express to print out v3.0.0 .
...
Split string with multiple delimiters in Python [duplicate]
I found some answers online, but I have no experience with regular expressions, which I believe is what is needed here.
5 A...
Access event to call preventdefault from custom function originating from onclick attribute of tag
...
I believe you can pass in event into the function inline which will be the event object for the raised event in W3C compliant browsers (i.e. older versions of IE will still require detection inside of your event handler functio...
Is it possible for a computer to “learn” a regular expression by user-provided examples?
Is it possible for a computer to "learn" a regular expression by user-provided examples?
10 Answers
...
How do I sort an observable collection?
...
Sorting an observable and returning the same object sorted can be done using an extension method. For larger collections watch out for the number of collection changed notifications.
I have updated my code to improve performance (thanks ...
How to check if an array value exists?
How can I check if $something['say'] has the value of 'bla' or 'omg' ?
12 Answers
...
Laravel: Get base url
Simple question, but the answer seems quite hard to come by. In Codeigniter, I could load the url helper and then simply do
...
Why is it impossible to build a compiler that can determine if a C++ function will change the value
... to build such a compiler?
For the same reason that you can't write a program that will determine whether any given program will terminate. This is known as the halting problem, and it's one of those things that's not computable.
To be clear, you can write a compiler that can determine that a fun...
