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Determining the last changelist synced to in Perforce

... I recommend the opposite for automatic build systems: you should first get the latest changelist from the server using: p4 changes -s submitted -m1 then sync to that change and record it in the revision info. The reason is as follows. Alth...
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Set Locale programmatically

...the changes to take effect. EDIT 11th MAY 2018 As from @CookieMonster's post, you might have problems keeping the locale change in higher API versions. If so, add the following code to your Base Activity so that you update the context locale on every Activity creation: @Override protected void at...
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CGContextDrawImage draws image upside down when passed UIImage.CGImage

... Good point, though mostly you don't need custom alpha levels for drawing an image (typically those are baked into images ahead of time for things that need alpha). Basically my motto is, use a little code as you can because more code means more...
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Match two strings in one line with grep

...nswered Dec 20 '10 at 6:16 dheerosaurdheerosaur 11.6k66 gold badges2727 silver badges3030 bronze badges ...
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Why is there huge performance hit in 2048x2048 versus 2047x2047 array multiplication?

...ou will have typically have 1-8 cache locations for all of these. Thus almost all of those accesses will trigger an L1 cache eviction, and fetching of data from a slower cache or main memory. share | ...
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libevent+protobuf轻松搭建tcpserver - C/C++ - 清泛网 - 专注C/C++及内核技术

... set_non_block(listen_fd); // 将输入的参数params… 组织为一个结构,以指针的方式存于accept_param struct event* ev_accept = (struct event*)malloc(sizeof(struct event)); event_set(ev_accept, listen_fd, EV_READ|EV_PERSIST, on_accept, (void*)accept_param); ev...
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Why does the order of the loops affect performance when iterating over a 2D array?

Below are two programs that are almost identical except that I switched the i and j variables around. They both run in different amounts of time. Could someone explain why this happens? ...
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How to redirect both stdout and stderr to a file [duplicate]

... answered Sep 23 '11 at 10:14 Costi CiudatuCosti Ciudatu 31.8k55 gold badges4949 silver badges8888 bronze badges ...
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How do I get the directory that a program is running from?

Is there a platform-agnostic and filesystem-agnostic method to obtain the full path of the directory from where a program is running using C/C++? Not to be confused with the current working directory. (Please don't suggest libraries unless they're standard ones like clib or STL.) ...
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Why are dates calculated from January 1st, 1970?

... It is the standard of Unix time. Unix time, or POSIX time, is a system for describing points in time, defined as the number of seconds elapsed since midnight proleptic Coordinated Universal Time (UTC) of January 1, 1970, not counting leap seconds. ...