大约有 5,475 项符合查询结果(耗时:0.0189秒) [XML]

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Canvas is stretched when using CSS but normal with “width” / “height” properties

...t my canvas to have a relative size? That is to say, how to mimic a width: 100%; css property? – Maxbester Mar 7 '13 at 8:00 1 ...
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How to track down a “double free or corruption” error

...de<stdio.h> #include<stdlib.h> int main() { char *x = malloc(100); free(x); free(x); return 0; } [sand@PS-CNTOS-64-S11 testbox]$ vim t1.c [sand@PS-CNTOS-64-S11 testbox]$ cc -g t1.c -o t1 [sand@PS-CNTOS-64-S11 testbox]$ ./t1 *** glibc detected *** ./t1: double free or corruption (to...
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What is a “slug” in Django?

... as: class Article(models.Model): title = models.CharField(max_length=100) content = models.TextField(max_length=1000) slug = models.SlugField(max_length=40) How would you reference this object with a URL and with a meaningful name? You could for instance use Article.id so the URL wou...
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How to use a switch case 'or' in PHP

...oth method is not efficient when dealing with large cases ... imagine 1 to 100 this would work perfectly $r1 = range(1, 100); $r2 = range(100, 200); $v = 76; switch (true) { case in_array($v, $r1) : echo 'the value is in range 1 to 100'; break; case in_array($v, $r2) : ...
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Cocoa: What's the difference between the frame and the bounds?

...e superview it is contained within. So, imagine a view that has a size of 100x100 (width x height) positioned at 25,25 (x,y) of its superview. The following code prints out this view's bounds and frame: // This method is in the view controller of the superview - (void)viewDidLoad { [super vie...
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Programmatically Lighten or Darken a hex color (or rgb, and blend colors)

...55,x.g=d>>16&255,x.b=d>>8&255,x.a=m((d&255)/0.255)/1000; else x.r=d>>16,x.g=d>>8&255,x.b=d&255,x.a=-1 }return x}; h=c0.length>9,h=a?c1.length>9?true:c1=="c"?!h:false:h,f=this.pSBCr(c0),P=p<0,t=c1&&c1!="c"?this.pSBCr...
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Secondary axis with twinx(): how to add to legend?

...np.arange(10) temp = np.random.random(10)*30 Swdown = np.random.random(10)*100-10 Rn = np.random.random(10)*100-10 fig = plt.figure() ax = fig.add_subplot(111) lns1 = ax.plot(time, Swdown, '-', label = 'Swdown') lns2 = ax.plot(time, Rn, '-', label = 'Rn') ax2 = ax.twinx() lns3 = ax2.plot(time, tem...
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Relative frequencies / proportions with dplyr

..., gear) %>% summarise (n=n()) %>% mutate(rel.freq = paste0(round(100 * n/sum(n), 0), "%")) ## am gear n rel.freq ## 1 0 3 15 79% ## 2 0 4 4 21% ## 3 1 4 8 62% ## 4 1 5 5 38% EDIT Because Spacedman asked for it :-) as.rel_freq <- function(x, ...
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“Full screen”

...ypage.html" style="position:fixed; top:0; left:0; bottom:0; right:0; width:100%; height:100%; border:none; margin:0; padding:0; overflow:hidden; z-index:999999;"> Your browser doesn't support iframes </iframe> And be sure to set the framed page's margins to 0, e.g., body { margin: 0; ...
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find first sequence item that matches a criterion [duplicate]

...than a complete list comprehension. Compare these two: [i for i in xrange(100000) if i == 1000][0] next(i for i in xrange(100000) if i == 1000) The first one needs 5.75ms, the second one 58.3µs (100 times faster because the loop 100 times shorter). ...