大约有 45,000 项符合查询结果（耗时：0.0606秒） [XML]
Execute a terminal command from a Cocoa app
... launch];
NSData *data = [file readDataToEndOfFile];
[file closeFile];
NSString *grepOutput = [[NSString alloc] initWithData: data encoding: NSUTF8StringEncoding];
NSLog (@"grep returned:\n%@", grepOutput);
NSPipe and NSFileHandle are used to redirect the standard output of the task.
For more ...
Pandas groupby: How to get a union of strings
...
In [4]: df = read_csv(StringIO(data),sep='\s+')
In [5]: df
Out[5]:
A B C
0 1 0.749065 This
1 2 0.301084 is
2 3 0.463468 a
3 4 0.643961 random
4 1 0.866521 string
5 2 0.120737 !
In [6]: df.dtype...
How to convert a string Date to long millseconds
I have a date inside a string, something like "12-December-2012".
How can I convert this into milliseconds (long)?
9 Answer...
Test if string is a number in Ruby on Rails
...
Create is_number? Method.
Create a helper method:
def is_number? string
true if Float(string) rescue false
end
And then call it like this:
my_string = '12.34'
is_number?( my_string )
# => true
Extend String Class.
If you want to be able to call is_number? directly on the string...
Best way to display decimal without trailing zeroes
Is there a display formatter that will output decimals as these string representations in c# without doing any rounding?
14...
How do I compare two strings in Perl?
How do I compare two strings in Perl?
6 Answers
6
...
Best way to get InnerXml of an XElement?
...lement might contain either XHTML or text, but I just want its contents in string form. The XmlElement type has the InnerXml property which is exactly what I'm after.
...
Using Regex to generate Strings rather than match them
...ance testing. It would be really cool to be able to specify a regex for Strings so that my generator spits out things which match this. Is there something out there already baked which I can use to do this? Or is there a library which gets me most of the way there?
...
ValueError : I/O operation on closed file
Here, p is a dictionary, w and c both are strings.
2 Answers
2
...
How to split a delimited string into an array in awk?
How to split the string when it contains pipe symbols | in it.
I want to split them to be in array.
9 Answers
...