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Could not open a connection to your authentication agent

...the contents ForwardAgent yes In the original tutorial the ForwardAgent param is Yes, but it's a typo. Use all lowercase or you'll get errors. Restart Msysgit. It will ask you to enter your passphrase once, and that's it (until you end the session, or your ssh-agent is killed.) Mac/OS X If you...
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How should I read a file line-by-line in Python?

...on's relatively deterministic reference-counting scheme for garbage collection. Other, hypothetical implementations of Python will not necessarily close the file "quickly enough" without the with block if they use some other scheme to reclaim memory. In such an implementation, you might get a "too...
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How to load a tsv file into a Pandas DataFrame?

...stead, i used read_table(), which worked much faster and without the extra param. – Yurik Aug 15 '14 at 9:56 ...
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Rails Observer Alternatives for 4.0

...stsController < ApplicationController def create @post = Post.new(params[:post]) @post.subscribe(PusherListener.new) @post.subscribe(ActivityListener.new) @post.subscribe(StatisticsListener.new) @post.on(:create_post_successful) { |post| redirect_to post } @post.on(:cr...
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Change date format in a Java string

...DateFormat; import java.util.Date; public class formateDate { /** * @param args * @throws ParseException */ public static void main(String[] args) throws ParseException { // TODO Auto-generated method stub String date_s=" 2011-01-18 00:00:00.0"; SimpleDateFormat dt= new SimpleDate...
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Why is it Valid to Concatenate Null Strings but not to Call “null.ToString()”?

... String.Concat in Reflector, you'll see it: // while looping through the parameters strArray[i] = (str == null) ? Empty : str; // then concatenate that string array (MSDN mentions it, too: http://msdn.microsoft.com/en-us/library/k9c94ey1.aspx) On the other hand, ToString() is an instance meth...
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Adding a directory to the PATH environment variable in Windows

...function. Just supply the directory you wish to add: function AddTo-Path{ param( [string]$Dir ) if( !(Test-Path $Dir) ){ Write-warning "Supplied directory was not found!" return } $PATH = [Environment]::GetEnvironmentVariable("PATH") if( $PATH -notlike "*"+$Dir+...
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Check number of arguments passed to a Bash script

...between its arguments. if [ "$#" -ne 1 ]; then echo "Illegal number of parameters" fi Or if test "$#" -ne 1; then echo "Illegal number of parameters" fi Suggestions When in Bash, prefer using [[ ]] instead as it doesn't do word splitting and pathname expansion to its variables that quoting...
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mmap() vs. reading blocks

...files contain sets of variable length records. I've got a first implementation up and running and am now looking towards improving performance, particularly at doing I/O more efficiently since the input file gets scanned many times. ...
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Disable hover effects on mobile browsers

... I take it from your question that your hover effect changes the content of your page. In that case, my advice is to: Add hover effects on touchstart and mouseenter. Remove hover effects on mouseleave, touchmove and click. Alternatively, you can e...