大约有 40,000 项符合查询结果(耗时:0.0487秒) [XML]

https://stackoverflow.com/ques... 

Notification click: activity already open

...current task, then instead of launching a new instance of that activity, all of the other activities on top of it will be closed and this Intent will be delivered to the (now on top) old activity as a new Intent. For example, consider a task consisting of the activities: A, B, C, D. If...
https://stackoverflow.com/ques... 

Define make variable at rule execution time

...r are evaluated. In order to create the directory only when out.tar is actually fired, you need to move the directory creation down into the steps: out.tar : $(eval TMP := $(shell mktemp -d)) @echo hi $(TMP)/hi.txt tar -C $(TMP) cf $@ . rm -rf $(TMP) The eval function evaluates a...
https://stackoverflow.com/ques... 

Input and output numpy arrays to h5py

I have a Python code whose output is a sized matrix, whose entries are all of the type float . If I save it with the extension .dat the file size is of the order of 500 MB. I read that using h5py reduces the file size considerably. So, let's say I have the 2D numpy array named A . How do I ...
https://stackoverflow.com/ques... 

What is the fastest way to compute sin and cos together?

.... If you need strong optimization, perhaps you should use it. Here is a small example: http://home.broadpark.no/~alein/fsincos.html Here is another example (for MSVC): http://www.codeguru.com/forum/showthread.php?t=328669 Here is yet another example (with gcc): http://www.allegro.cc/forums/thread...
https://stackoverflow.com/ques... 

What are five things you hate about your favorite language? [closed]

...ld be matched to another NULL value. If you understand this (what also is called ternary logic) than you might understand the reason for introducing the "IS" operator for testing against NULL. – Alex Aug 26 '10 at 16:58 ...
https://stackoverflow.com/ques... 

Is there an easy way to request a URL in python and NOT follow redirects?

...st way to do it would be to subclass HTTPRedirectHandler and then use build_opener to override the default HTTPRedirectHandler, but this seems like a lot of (relatively complicated) work to do what seems like it should be pretty simple. ...
https://stackoverflow.com/ques... 

Why are #ifndef and #define used in C++ header files?

...he header is included, it checks if a unique value (in this case HEADERFILE_H) is defined. Then if it's not defined, it defines it and continues to the rest of the page. When the code is included again, the first ifndef fails, resulting in a blank file. That prevents double declaration of any iden...
https://stackoverflow.com/ques... 

How can I do an asc and desc sort using underscore.js?

... You can use .sortBy, it will always return an ascending list: _.sortBy([2, 3, 1], function(num) { return num; }); // [1, 2, 3] But you can use the .reverse method to get it descending: var array = _.sortBy([2, 3, 1], function(num) { return num; }); console.log(array); // [1,...
https://stackoverflow.com/ques... 

Initializing a list to a known number of elements in Python [duplicate]

...st thing that comes to mind for me is: verts = [None]*1000 But do you really need to preinitialize it? share | improve this answer | follow | ...
https://stackoverflow.com/ques... 

Reading binary file and looping over each byte

...hile byte != "": # Do stuff with byte. byte = f.read(1) finally: f.close() Python 2.5-2.7 with open("myfile", "rb") as f: byte = f.read(1) while byte != "": # Do stuff with byte. byte = f.read(1) Note that the with statement is not available in versio...