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What is the _snowman param in Ruby on Rails 3 forms for?

...net Explorer (5, 6, 7 and 8) to encode its parameters as unicode. Specifically, this bug can be triggered if the user switches the browser's encoding to Latin-1. To understand why a user would decide to do something seemingly so crazy, check out this google search. Once the user has put the web-sit...
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What are the special dollar sign shell variables?

... $3, ... are the positional parameters. "$@" is an array-like construct of all positional parameters, {$1, $2, $3 ...}. "$*" is the IFS expansion of all positional parameters, $1 $2 $3 .... $# is the number of positional parameters. $- current options set for the shell. $$ pid of the current shell (...
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How to upgrade Eclipse for Java EE Developers?

Is there any non-painful way to upgrade an Eclipse installation? I have tried browsing the eclipse site but I cannot find an useful description. ...
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How to check if an NSDictionary or NSMutableDictionary contains a key?

... Don't you want to use valueForKey, as that would call objectForKey if necessary? – Raffi Khatchadourian Dec 21 '11 at 0:39 6 ...
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Is it .yaml or .yml?

...ruling as you can get, but the habit of 8.3 is hard to get out of (and, appallingly, still occasionally relevant in 2013). share | improve this answer | follow ...
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Request format is unrecognized for URL unexpectedly ending in

... Found a solution on this website All you need is to add the following to your web.config <configuration> <system.web> <webServices> <protocols> <add name="HttpGet"/> <add name="HttpPost"/> ...
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Draw line in UIView

...re are no errors - I wrote it without Xcode): UIView *lineView = [[UIView alloc] initWithFrame:CGRectMake(0, 200, self.view.bounds.size.width, 1)]; lineView.backgroundColor = [UIColor blackColor]; [self.view addSubview:lineView]; [lineView release]; // You might also keep a reference to this view ...
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commands not found on zsh

...ll ( zsh ) instead of the default bash, and something wrong happen so that all commands who used to work are no longer recognized: ...
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How to install a plugin in Jenkins manually

Installing a plugin from the Update center results in: 12 Answers 12 ...
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How can you use optional parameters in C#?

... Good on you for providing up-to-date information. Ideally the original answers would be updated with current information such as C# 4.0. I believe that is what the SO guys originally had in mind, a Wiki mentality, but everyone is a bit too afraid to edit someone else's answer. ...