大约有 40,000 项符合查询结果(耗时:0.0467秒) [XML]

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Using Pairs or 2-tuples in Java [duplicate]

...uple)){ return false; } Tuple<X,Y> other_ = (Tuple<X,Y>) other; // this may cause NPE if nulls are valid values for x or y. The logic may be improved to handle nulls properly, if needed. return other_.x.equals(this.x) && other_.y.equa...
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Order data frame rows according to vector with specific order

... I prefer to use ***_join in dplyr whenever I need to match data. One possible try for this left_join(data.frame(name=target),df,by="name") Note that the input for ***_join require tbls or data.frame ...
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Rolling or sliding window iterator?

...f window(seq, n=2): it = iter(seq) win = deque((next(it, None) for _ in xrange(n)), maxlen=n) yield win append = win.append for e in it: append(e) yield win In my tests it handily beats everything else posted here most of the time, though pillmuncher's tee versi...
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Programmatically fire button click event?

... Yes, [_button setHighlighted:YES]; [_button sendActionsForControlEvents:UIControlEventTouchUpInside]; [_button setHighlighted:NO]; But the problem here is you will not be able to see those event because its too fast . so what you...
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Eclipse RCP开发桌面程序 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...项,记住,一定要把我们自己,也就是com.blogjava.youxia.rcp_start加进依赖项,否则会出错。最开始的时候,就是这么一点小问题,让我浪费了几天时间。   再点击添加必须的插件,自动添加其它的依赖项。   再下一步,...
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jQuery/Javascript function to clear all the fields of a form [duplicate]

... @DayronGallardo Might also want to add $(container_element).find(':checkbox, :radio').prop('checked', false); – rybo111 Mar 16 '14 at 9:55 ...
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PHP Regex to get youtube video ID?

... Use parse_url() and parse_str(). (You can use regexes for just about anything, but they are very easy to make an error in, so if there are PHP functions specifically for what you are trying to accomplish, use those.) parse_url takes...
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How to force file download with PHP

...ser visiting a web page with PHP. I think it has something to do with file_get_contents , but am not sure how to execute it. ...
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Left align two graph edges (ggplot)

... Using cowplot package: A <- ggplot(CO2, aes(x=Plant)) + geom_bar() +coord_flip() B <- ggplot(CO2, aes(x=Type)) + geom_bar() +coord_flip() library(cowplot) plot_grid(A, B, ncol=1, align="v") share ...
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Floating point vs integer calculations on modern hardware

... Poor man's FPU/ALU operation benchmark: #include <stdio.h> #ifdef _WIN32 #include <sys/timeb.h> #else #include <sys/time.h> #endif #include <time.h> #include <cstdlib> double mygettime(void) { # ifdef _WIN32 struct _timeb tb; _ftime(&tb); return (double)tb...