大约有 5,476 项符合查询结果（耗时：0.0141秒） [XML]
Why is the default value of the string type null instead of an empty string?
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100
But please don't. The last thing another programmer wants to see is thousands of lines of code peppered with .EmptyNull() everywhere just ...
How to git reset --hard a subdirectory?
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+100
Try changing
git checkout -- a
to
git checkout -- `git ls-files -m -- a`
Since version 1.7.0, Git's ls-files honors the skip-w...
What is the best way to programmatically detect porn images? [closed]
..."*.jpg")):
skin_percent = get_skin_ratio(Image.open(image_file)) * 100
if skin_percent>30:
print "PORN {0} has {1:.0f}% skin".format(image_file, skin_percent)
else:
print "CLEAN {0} has {1:.0f}% skin".format(image_file, skin_percent)
This code mea...
Heatmap in matplotlib with pcolor?
...opriate font and dpi
sns.set(font_scale=1.2)
sns.set_style({"savefig.dpi": 100})
# plot it out
ax = sns.heatmap(nba_norm, cmap=plt.cm.Blues, linewidths=.1)
# set the x-axis labels on the top
ax.xaxis.tick_top()
# rotate the x-axis labels
plt.xticks(rotation=90)
# get figure (usually obtained via "fi...
Array vs. Object efficiency in JavaScript
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The short version: Arrays are mostly faster than objects. But there is no 100% correct solution.
Update 2017 - Test and Results
var a1 = [{id: 29938, name: 'name1'}, {id: 32994, name: 'name1'}];
var a2 = [];
a2[29938] = {id: 29938, name: 'name1'};
a2[32994] = {id: 32994, name: 'name1'};
var o =...
Resize a large bitmap file to scaled output file on Android
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100
Justin answer translated to code (works perfect for me):
private Bitmap getBitmap(String path...
How do I check if an element is really visible with JavaScript? [duplicate]
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+100
For the point 2.
I see that no one has suggested to use document.elementFromPoint(x,y), to me it is the fastest way to test if an e...
Best way to serialize an NSData into a hexadeximal string
...onversion:
BenchMark (mean time for a 1024 bytes data conversion repeated 100 times):
Dave Gallagher : ~8.070 ms
NSProgrammer : ~0.077 ms
Peter : ~0.031 ms
This One : ~0.017 ms
@implementation NSData (BytesExtras)
static char _NSData_BytesConversionString_[512] = "000102030405...
App Inventor 2 SQLite 拓展：超流行兼容主流SQL语法的迷你本地数据库引擎 ...
...工作，因此不会阻塞主 UI 线程。这对于在可能需要超过 100 毫秒左右的操作期间获得良好的用户体验非常重要。阻塞主 UI 线程将使您的应用程序看起来“冻结”并变得无响应，用户不喜欢这样。
当您需要执行需要一段时间的数...
Convert unix time to readable date in pandas dataframe
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