大约有 40,000 项符合查询结果(耗时:0.0335秒) [XML]

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Breaking out of nested loops [duplicate]

Is there an easier way to break out of nested loops than throwing an exception? (In Perl, you can give labels to each loop and at least continue an outer loop.) ...
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Why does Python code use len() function instead of a length method?

...... def len(self): ... return len(self) ... >>> class Set(set): ... def len(self): ... return len(self) ... >>> my_list = List([1,2,3,4,5,6,7,8,9,'A','B','C','D','E','F']) >>> my_dict = Dict({'key': 'value', 'site': 'stackoverflow'}) >>> my...
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Understanding the map function

Apply function to every item of iterable and return a list of the results. If additional iterable arguments are passed, function must take that many arguments and is applied to the items from all iterables in parallel. ...
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Python: How to create a unique file name?

I have a python web form with two options - File upload and textarea . I need to take the values from each and pass them to another command-line program. I can easily pass the file name with file upload options, but I am not sure how to pass the value of the textarea. ...
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How can I make a UITextField move up when the keyboard is present - on starting to edit?

...n whenever the keyboard is shown. Here is some sample code: #define kOFFSET_FOR_KEYBOARD 80.0 -(void)keyboardWillShow { // Animate the current view out of the way if (self.view.frame.origin.y >= 0) { [self setViewMovedUp:YES]; } else if (self.view.frame.origin.y &l...
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How to parse a CSV file in Bash?

I'm working on a long Bash script. I want to read cells from a CSV file into Bash variables. I can parse lines and the first column, but not any other column. Here's my code so far: ...
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Regex Pattern to Match, Excluding when… / Except between

...something more complete that I can 100% understand and reuse; that's why I set a bounty. Also ideas that work everywhere are better for me than not standard syntax like \K ...
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Where is C not a subset of C++? [closed]

I read in a lot of books that C is a subset of C++. 12 Answers 12 ...
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Why is my git repository so big?

...epository into the local one (git remote add ... and git remote update). After deleting the unwanted remote ref, branches and tags I still had 1.4GB (!) of wasted space in my repository. I was only able to get rid of this by cloning it with git clone file:///path/to/repository. Note that the file...
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Getting and removing the first character of a string

..., we can make a reference class with a pop method. PopStringFactory <- setRefClass( "PopString", fields = list( x = "character" ), methods = list( initialize = function(x) { x <<- x }, pop = function(n = 1) { if(nchar(x) == 0) { w...