大约有 29,664 项符合查询结果（耗时：0.0480秒） [XML]
Sample random rows in dataframe
...1973846
3 2.3343391 -0.4385071
4 -0.9040278 -0.6593677
5 0.4180331 -1.2592415
6 0.7572246 -0.5463655
7 -0.8996483 0.4231117
8 -1.0356774 -0.1640883
9 -0.3983045 0.7157506
10 -0.9060305 2.3234110
Then select some rows at random:
> df[sample(nrow(df), 3), ]
X1 X2
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How do I detect if I am in release or debug mode?
...in debug mode :
update /app/build.gradle
android {
compileSdkVersion 25
buildToolsVersion "25.0.1"
defaultConfig {
applicationId "your.awesome.app"
minSdkVersion 16
targetSdkVersion 25
versionCode 100
versionName "1.0.0"
buildConfigField...
Passing $_POST values with cURL
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edited May 23 '17 at 12:25
Community♦
111 silver badge
answered Aug 26 '08 at 15:44
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MySQL load NULL values from CSV data
...of "name",\N,"stuff"
– Jonathon
Aug 25 '13 at 1:42
3
I can verify that at least for "phpMyAdmin 3...
jQuery Call to WebService returns “No Transport” error
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253
Add this: jQuery.support.cors = true;
It enables cross-site scripting in jQuery (introduced a...
How is this fibonacci-function memoized?
...take 100 fib
Output:
[1,2,3,5,8,13,21,34,55,89,144,233,377,610,987,1597,2584,4181,6765,10946,17711,28657,46368,75025,121393,196418,317811,514229,832040,1346269,2178309,3524578,5702887,9227465,14930352,24157817,39088169,63245986,102334155,165580141,267914296,433494437,701408733,1134903170,18363119...
How can I reverse the order of lines in a file?
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25 Answers
25
Active
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SVN command to delete all locally missing files
... xargs part?
– jwg
Feb 21 '14 at 17:25
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Python Create unix timestamp five minutes in the future
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edited Apr 29 '14 at 15:25
community wiki
7 r...
IntelliJ - Convert a Java project/module into a Maven project/module
...project inside the pom.
– MrSir
Nov 25 '17 at 13:07
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