大约有 40,000 项符合查询结果(耗时:0.0355秒) [XML]

https://stackoverflow.com/ques... 

unable to copy/paste in mingw shell

I just installed MinGW on Windows and I'm unable to copy/paste as I am used to on Linux or even PuTTY. What is the trick for copying and pasting text (e.g. from chrome) into MinGW shell? ...
https://stackoverflow.com/ques... 

How to initialize private static members in C++?

... one of our .cpp files? It will compile fine and we will have no way of knowing which one wins until we run the program. Never put executed code into a header for the same reason that you never #include a .cpp file. include guards (which I agree you should always use) protect you from something di...
https://stackoverflow.com/ques... 

DirectX SDK (June 2010) Installation Problems: Error Code S1023

...Redistributable Setup_20110608_xxx.html ## and check if you have the following error Installation Blockers: A newer version of Microsoft Visual C++ 2010 Redistributable has been detected on the machine. Final Result: Installation failed with error code: (0x000013EC), "A StopBlock was ...
https://stackoverflow.com/ques... 

How do I replace a character at a particular index in JavaScript?

... There is no replaceAt function in JavaScript. You can use the following code to replace any character in any string at specified position: function rep() { var str = 'Hello World'; str = setCharAt(str,4,'a'); alert(str); } function setCharAt(str,index,chr) { if(index &gt...
https://stackoverflow.com/ques... 

Suppress warning “Category is implementing a method which will also be implemented by its primary cl

...in it. Ideally, singletons should be injected into code as a protocol, allowing you to switch out the implementation. But if you already have one embedded inside your code, you can add a category of the singleton in your unit test and overide the sharedInstance and the methods you what to control to...
https://stackoverflow.com/ques... 

Why does Java's hashCode() in String use 31 as a multiplier?

... subtract instruction. However, if your multiplier is slow this is still a win. Modern processors tend to have fast multipliers so it doesn't make much difference, so long as 32 goes on the correct side. It's not a great hash algorithm, but it's good enough and better than the 1.0 code (and very mu...
https://stackoverflow.com/ques... 

How to get a vertical geom_vline to an x-axis of class date?

... on my machine (Win10 with R 3.2.2 and ggplot 1.0.1), I have to coerce the date to POSIXct to get it to align properly: as.POSIXct(as.Date(c("2016-12-01","2017-02-01"))) – Jthorpe Jul 28 '17 at 17:36 ...
https://stackoverflow.com/ques... 

What Computer Science concepts should I know? [closed]

... Operating system concepts: Modern operating systems People skills: How to win friends and influence people Teamwork: Peopleware User interface design: The inmates are running the asylum share | im...
https://stackoverflow.com/ques... 

Programmer Puzzle: Encoding a chess board state throughout a game

...s “all subsequent legal moves”. The problem also says nothing about knowing the moves up to this point. That’s actually a problem as I’ll explain. Castling The game has proceeded as follows: e4 e5 Nf3 Nc6 Bb5 a6 Ba4 Bc5 The board looks as follows: White has the option of castling...
https://stackoverflow.com/ques... 

Why is there no tuple comprehension in Python?

...es return a callable so if I only need to do it once I don't see much of a win vs just using tuple(obj[item] for item in items) directly. In my case I was embedding this into a list comprehension to make a list of tuple records. If I need to do this repeatedly throughout the code then itemgetter l...