大约有 12,000 项符合查询结果（耗时：0.0183秒） [XML]
Trimming a huge (3.5 GB) csv file to read into R
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My try with readLines. This piece of a code creates csv with selected years.
file_in <- file("in.csv","r")
file_out <- file("out.csv","a")
x <- readLines(file_in, n=1)
writeLines(x, file_out) # copy headers
B <- 300000 # depends how large is one pack
while(length(x)) {
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Eclipse: Java, see where class is used
Is there a way in Eclipse to select a Java class, and then bring up a list of all Java files where that class is used within a project?
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What is the purpose of “android.intent.category.DEFAULT”?
...ies, then Android will present all candidates to the user and the user can select his preferred default.
Reference:
http://developer.android.com/guide/components/intents-filters.html
Extract from that page:
Android treats all implicit intents passed tostartActivity() as if they contained at ...
Can I unshelve to a different branch in tfs 2008?
...l . You need to manually "migrate" all these files (there is also no multi-select). And then they are added as new files to the workspace. I can't use it, because I can't merge it anymore.
– Stefan Steinegger
May 18 '10 at 12:20
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ALTER DATABASE failed because a lock could not be placed on database
... for a couple of minutes)
CREATE DATABASE TESTING123
GO
USE TESTING123;
SELECT NEWID() AS X INTO FOO
FROM sys.objects s1,sys.objects s2,sys.objects s3,sys.objects s4 ,sys.objects s5 ,sys.objects s6
Connections 2 and 3
set lock_timeout 5;
ALTER DATABASE TESTING123 SET SINGLE_USER WITH ROLLBACK...
Git's famous “ERROR: Permission to .git denied to user”
...:
Open "Keychain Access.app" (You can find it in Spotlight or LaunchPad)
Select "All items" in Category
Search "git"
Delete every old & strange item
Try to Push again and it just WORKED
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URLs: Dash vs. Underscore [closed]
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also worth noting that underscored_text is selectable as a whole by double clicking in some devices and long-pressing on mobiles, whereas with dash-separated-text the same actions select each separated word. Think about if a user would ever try to copy out something f...
Check image width and height before upload with Javascript
... return false;
}
} else {
alert("Please select a valid Image file.");
return false;
}
}
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Regular expression to match balanced parentheses
I need a regular expression to select all the text between two outer brackets.
21 Answers
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Resize image in the wiki of GitHub using Markdown
...files)
Go to the "Write Comment" box at the end
Click "Attach files ... by selecting them"; select your local image file
GitHub echos a long long string where it put the image, e.g.
![khan-lasso-squared](https://cloud.githubusercontent.com/assets/1280390/12011119/596fdca4-acc2-11e5-84d0-4878164e04bb...