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What are the benefits of learning Vim? [closed]
...r a sudo edit:
$ sudo vi
Also, GMail uses vi-ish commands for selecting & moving emails around!
You don't have to be a master.
Just learn
The basics:
How to switch from command mode to insert mode i
How to switch from insert mode to command mode Esc
How to navigate up a line in comma...
Pass Variables by Reference in Javascript
... return this.value !== undefined; } });
if ((value !== undefined) && (value !== null))
this.constructor = value.constructor;
this.toString = function () { return this.value + ''; };
} else {
if (!rvar.refs)
rvar.refs = {};
if (!cont...
Rails: How does the respond_to block work?
... be sent to the View (which is going to the browser).
The block in your example is formatting data - by passing in a 'format' paramater in the block - to be sent from the controller to the view whenever a browser makes a request for html or json data.
If you are on your local machine and you have ...
How do servlets work? Instantiation, sessions, shared variables and multithreading
...guages which maintains the session by a cookie are sensitive as well, like PHP with PHPSESSID cookie, ASP.NET with ASP.NET_SessionID cookie, etcetera. That's also why URL rewriting with ;jsessionid=xxx as some JSP/Servlet MVC frameworks automatically do is frowned upon. Just make sure that session I...
How to set Java environment path in Ubuntu
...va-6-openjdk/bin. Usually the classpath is automatically set for the java & related executables.
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iOS 7 style Blur view
...he right) compares to the built-in blur (on the left):
I use a 4X downsampling / upsampling to reduce the number of pixels the Gaussian blur has to operate over, so an iPhone 4S can blur the entire screen in roughly 30 ms using this operation.
You still have the challenge of how to pull content...
form_for with nested resources
...th(@article, comment_item),
:method => :delete, :confirm => "Really?" %>
What jamuraa says may work in the context of Article, but it did not work for me in various other ways.
There is a lot of discussion related to nested resources, e.g. http://weblog.jamisbuck.org/2007/2/5/nesti...
How can I check the syntax of Python script without executing it?
...
import script, but all code must be in functions. Which is good practice anyway. I've even adopted this for shell scripts. From here it's a small step to unit testing.
– Henk Langeveld
Aug 10 '12 at 12:07
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Compelling examples of custom C++ allocators?
...essary for correctness, performance, scalability, etc? Any really clever examples?
16 Answers
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How do I split a string with multiple separators in javascript?
...
You can pass a regex into Javascript's split operator. For example:
"1,2 3".split(/,| /)
["1", "2", "3"]
Or, if you want to allow multiple separators together to act as one only:
"1, 2, , 3".split(/(?:,| )+/)
["1", "2", "3"]
(You have to use the non-capturing (?:) parens becaus...