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What command opens Ruby's REPL?
...al REPLs for Ruby.
The standard library ships with a REPL called IRb (for Interactive Ruby), which installs a program named irb, but since it is just a Ruby library, it can also be invoked from Ruby code and not just from the shell. On Rubinius, IRb can also be invoked by just calling the rbx progr...
iOS forces rounded corners and glare on inputs
iOS devices add a lot of annoying styles on form inputs, particularly on input[type=submit]. Shown below are the same simple search form on a desktop browser, and on an iPad.
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How to switch position of two items in a Python list?
I haven’t been able to find a good solution for this problem on the net (probably because switch, position, list and Python are all such overloaded words).
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UIButton remove all target-actions
...et-action-forControlEvents: to a UIButton. I'd like to remove all of these in one go without deallocating anything. I will then set new targets.
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Regular expression: find spaces (tabs/space) but not newlines
... can I have a regular expression that tests for spaces or tabs but not newlines. I tried \s but found out that it tests for newlines too.
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C/C++ Struct vs Class
After finishing my C++ class it seemed to me the structs/classes are virtually identical except with a few minor differences.
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How do I run a Ruby file in a Rails environment?
I want to run a Ruby file in the context of a Rails environment.
rails runner almost does what I want to do, but I'd like to just give it the file name and arguments. I'm pretty sure this is possible since I've done it before. Can someone remind me how to do this?
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How to shrink/purge ibdata1 file in MySQL
I am using MySQL in localhost as a "query tool" for performing statistics in R, that is, everytime I run a R script, I create a new database (A), create a new table (B), import the data into B, submit a query to get what I need, and then I drop B and drop A.
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How set the default repository
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It's in the .hg/hgrc file.
[paths]
default = http://myserver/hg/repo1
default-push = ../mytestrepo
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Disabling highlighting of current line in the Visual Studio editor
The Visual Studio editor highlights the current line by changing the background color of the current line. Is there a simple way to disable this highlighting? Otherwise, which parameter in Fonts and Colors dialog controls the background color of the currently selected line in the editor?
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