大约有 13,340 项符合查询结果（耗时：0.0441秒） [XML]
Using R to download zipped data file, extract, and import data
...on. This example reads a .xls file.
url <-"https://www1.toronto.ca/City_Of_Toronto/Information_Technology/Open_Data/Data_Sets/Assets/Files/fire_stns.zip"
temp <- tempfile()
temp2 <- tempfile()
download.file(url, temp)
unzip(zipfile = temp, exdir = temp2)
data <- read_xls(file.path(tem...
Android studio - Failed to find target android-18
...under SDK 18. No need to hack the manifest files.
Fixed by:
export ANDROID_HOME= pathtobundle/adt-bundle-linux-x86_64-20130729/sdk
If you don't have the ADT installed, and just want the SDK, it seems like a good solution is to install everything and then point Android Studio to the just the packag...
Using Regular Expressions to Extract a Value in Java
... edited Jan 28 '17 at 23:29
Miha_x64
3,92511 gold badge2828 silver badges5454 bronze badges
answered Oct 25 '08 at 21:47
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Is there a way to use shell_exec without waiting for the command to complete?
...
How about adding.
"> /dev/null 2>/dev/null &"
shell_exec('php measurePerformance.php 47 844 email@yahoo.com > /dev/null 2>/dev/null &');
Note this also gets rid of the stdio and stderr.
sh...
理解和配置 Linux 下的 OOM Killer - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...-vm:47388kB, anon-rss:3744kB, file-rss:80kB
httpd invoked oom-killer: gfp_mask=0x201da, order=0, oom_adj=0, oom_score_adj=0
httpd cpuset=/ mems_allowed=0
Pid: 8911, comm: httpd Not tainted 2.6.32-279.1.1.el6.i686 #1
...
21556 total pagecache pages
21049 pages in swap cache
Swap cache s...
MVC (Laravel) where to add logic
... or dwightwatson/validating for more information.
Magic Methods: I use the __get and __set methods of my models to hook into functionality where appropriate
Extending Eloquent: If there's an action you'd like to take on all update/create you can even extend eloquent and apply it to multiple models.
...
indexOf method in an object array?
...ethod for doing exactly what Pablo's anonymous map method does.
var idx = _.chain(myArray).pluck("hello").indexOf("Stevie").value();
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How do I create directory if none exists using File class in Ruby?
... are not already present:
require 'fileutils'
dirname = File.dirname(some_path)
unless File.directory?(dirname)
FileUtils.mkdir_p(dirname)
end
Edit: Here is a solution using the core libraries only (reimplementing the wheel, not recommended)
dirname = File.dirname(some_path)
tokens = dirname....
Numpy: Get random set of rows from 2D array
...st, but this is what works best for me:
A[np.random.choice(A.shape[0], num_rows_2_sample, replace=False)]
change the replace=False to True to get the same thing, but with replacement.
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Split a string by another string in C#
....microsoft.com/en-us/dotnet/api/system.string.split?view=netcore-2.0#System_String_Split_System_String_System_StringSplitOptions_
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