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How to check if a file is empty in Bash?
I have a file called diff.txt. Want to check if it is empty. Did something like this but couldn't get it working.
10 Answe...
LINQ: Distinct values
...")
.Select(element => new {
id = (int) element.Attribute("id"),
category = (int) element.Attribute("cat") })
.Distinct();
If you're trying to get a distinct set of values of a "larger" type, but only looking...
AngularJS $http, CORS and http authentication
...cept, Accept-Version, Content-Length, Content-MD5, Date, X-Api-Version, X-File-Name",
"AccessControlAllowMethods": "POST, GET, PUT, DELETE, OPTIONS",
"AccessControlAllowCredentials": true
};
/**
* Headers
*/
res.header("Access-Control-Allow-Credentials", respo...
You can't specify target table for update in FROM clause
...s already been updated by the query as it's in progress. Neither of these side-effects is necessarily desirable, so the safest bet is to force you to specify what will happen using an extra table.
– siride
Mar 9 '13 at 20:54
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Why does Git treat this text file as a binary file?
...
It simply means that when git inspects the actual content of the file (it doesn't know that any given extension is not a binary file - you can use the attributes file if you want to tell it explicitly - see the man pages).
Having inspected the file's contents it has seen stuff that isn't ...
How can I SELECT rows with MAX(Column value), DISTINCT by another column in SQL?
...
@Young the problem with your query is that it may return id, player and resource of non-max row for a given home i.e. for home = 10 you may get : 3 | 10 | 04/03/2009 | john | 300 In other words it doesn't guarantees that all column of a row in resultset will belong to max(da...
Get names of all files from a folder with Ruby
I want to get all file names from a folder using Ruby.
19 Answers
19
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R - Markdown avoiding package loading messages
... and think it is pretty neat. I have a minor issue though. When I source a file in an R-Chunk, the knitr output includes external comments as follows:
...
AngularJS: disabling all form controls between submit and server response
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Input type button, text and file not disabled in IE11 :-(, also button is grayed out but angular ng-click-handler still fires.
– Sebastian
Jan 15 '15 at 8:12
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How do I iterate over an NSArray?
I'm looking for the standard idiom to iterate over an NSArray. My code needs to be suitable for OS X 10.4+.
8 Answers
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