大约有 40,000 项符合查询结果(耗时:0.0756秒) [XML]

https://stackoverflow.com/ques... 

Plot two histograms on single chart with matplotlib

... Wouldn't it be a good idea to set pyplot.hold(True) before plotting, just in case? – JAB Jul 29 '11 at 13:39 ...
https://stackoverflow.com/ques... 

JavaScript “new Array(n)” and “Array.prototype.map” weirdness

... array which have assigned value; [...] [undefined] actually applies the setter on the index(es) so that map will iterate, whereas new Array(1) just initializes the index(es) with a default value of undefined so map skips it. I believe this is the same for all iteration methods. ...
https://stackoverflow.com/ques... 

Extract substring using regexp in plain bash

... editor after snippets, if snippets enabled if (StackExchange.settings.snippets.snippetsEnabled) { StackExchange.using("snippets", function() { createEditor(); }); } else { createEditor(); ...
https://stackoverflow.com/ques... 

Why does Java switch on contiguous ints appear to run faster with added cases?

...5 cases in my tests), it is in not inlined any longer with the default JVM settings - that is the likeliest cause for the drop in performance at that point. With 5 cases, the decompiled code looks like this (notice the cmp/je/jg/jmp instructions, the assembly for if/goto): [Verified Entry Point]...
https://stackoverflow.com/ques... 

How do I ignore files in Subversion?

...e Configuration Area - global-ignores option: This is a client-side only setting, so your global-ignores list won't be shared by other users, and it applies to all repos you checkout onto your computer. This setting is defined in your Runtime Configuration Area file: Windows (file-based) - C:\Us...
https://stackoverflow.com/ques... 

How to dismiss keyboard for UITextView with return key?

... is easy enough to change the return key to "done" using either [textField setReturnKeyType: UIReturnKeyDone]; or using interface builder – Casebash Sep 28 '10 at 2:58 9 ...
https://stackoverflow.com/ques... 

What is the difference between char s[] and char *s?

... The difference here is that char *s = "Hello world"; will place "Hello world" in the read-only parts of the memory, and making s a pointer to that makes any writing operation on this memory illegal. While doing: char s[] = "...
https://stackoverflow.com/ques... 

What's best SQL datatype for storing JSON string?

...baseGenerated(DatabaseGeneratedOption.Identity)] public Guid Id { get; set; } public string FieldJson { get; set; } //save json in this field and [NotMapped] public List<FieldList> FieldList // get return list from this properity { get => !string....
https://stackoverflow.com/ques... 

Get first n characters of a string

How can I get the first n characters of a string in PHP? What's the fastest way to trim a string to a specific number of characters, and append '...' if needed? ...
https://stackoverflow.com/ques... 

Counting inversions in an array

I'm designing an algorithm to do the following: Given array A[1... n] , for every i < j , find all inversion pairs such that A[i] > A[j] . I'm using merge sort and copying array A to array B and then comparing the two arrays, but I'm having a difficult time seeing how I can use this to find...