大约有 19,606 项符合查询结果（耗时：0.0296秒） [XML]
Make a float only show two decimal places
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I made a swift extension based on above answers
extension Float {
func round(decimalPlace:Int)->Float{
let format = NSString(format: "%%.%if", decimalPlace)
let string = NSString(format: format, self)
return Float(atof...
How to remove all characters after a specific character in python?
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and btw, for completeness, the RE-based solution is 2.54 usec, i.e., way slower than either @Ayman's or @Ned's.
– Alex Martelli
May 24 '09 at 22:58
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grep a tab in UNIX
... about 30% slower than using grep -P. This might be trivial and irrelevant based on the use case, and awk may be better simply for readability and portability.
– theferrit32
Sep 12 '19 at 16:37
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Create an index on a huge MySQL production table without table locking
...If your using a version greater than 5.1 indices are created while the database is online. So not to worry you won't interrupt production system use."
This is ****FALSE**** (at least for MyISAM / InnoDB tables, which is what 99.999% of people out there use. Clustered Edition is different.)
Doing...
Serving static files with Sinatra
...oes extra stuff for you github.com/sinatra/sinatra/blob/master/lib/sinatra/base.rb#L351
– iain
Dec 10 '15 at 23:07
1
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Change the default editor for files opened in the terminal? (e.g. set it to TextEdit/Coda/Textmate)
... open uses Launch Services to determine the file type, mostly based on its extension. If the file has an unknown extension, it'll fail to open the file. Generally, your CLI editor should be something that assumes text files...
– Gordon Davisson
A...
BestPractice - Transform first character of a string into lower case
...rray[0] = char.ToLower(charArray[0]); return new string(charArray); } Based on @MatteoMigliore's comment.
– KregHEk
Dec 21 '15 at 8:36
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Pretty Printing a pandas dataframe
How can I print a pandas dataframe as a nice text-based table, like the following?
9 Answers
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How can I get the iOS 7 default blue color programmatically?
...7.0, all subclasses of UIView derive their behavior for tintColor from the base class. See the discussion of tintColor at the UIView level for more information.
Assuming you don't change the tintColor before grabbing the default value, you can use:
self.view.tintColor
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How to get Git to clone into current directory
...s to . and .. by default so is a new directory technically "empty" in Unix-based systems, at all? I mean, I guess you could unlink . and unlink .. but that might cause you huge problems later if you forget to re-link again after cloning....
– SeldomNeedy
Jul 23...