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Rails - controller action name to string
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Rails 2.X: @controller.action_name
Rails 3.1.X: controller.action_name, action_name
Rails 4.X: action_name
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inserting characters at the start and end of a string
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Strings are immutable so you can't insert characters into an existing string. You have to create a new string. You can use string concatenation to do what you want:
yourstring = "L" + yourstring + "LL"
Note that you can also create a string with n Ls by using multiplication:
m = 1
n...
Animate scrollTop not working in firefox
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Firefox places the overflow at the html level, unless specifically styled to behave differently.
To get it to work in Firefox, use
$('body,html').animate( ... );
Working example
The CSS solution would be to set the following s...
How to assign from a function which returns more than one value?
...Values()[[2]] would be sufficient.)
See the cited r-help thread for more examples.
(2) with If the intent is merely to combine the multiple values subsequently and the return values are named then a simple alternative is to use with :
myfun <- function() list(a = 1, b = 2)
list[a, b] <- m...
Is there a difference between /\s/g and /\s+/g?
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In the first regex, each space character is being replaced, character by character, with the empty string.
In the second regex, each contiguous string of space characters is being replaced with the empty string because of the +.
However, ju...
Reverse a string in Python
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How about:
>>> 'hello world'[::-1]
'dlrow olleh'
This is extended slice syntax. It works by doing [begin:end:step] - by leaving begin and end off and specifying a step of -1, it reverses a string.
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SQL JOIN - WHERE clause vs. ON clause
After reading it, this is not a duplicate of Explicit vs Implicit SQL Joins .
The answer may be related (or even the same) but the question is different.
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What is the difference between string primitives and String objects in JavaScript?
...onality. That aside, the behaviour you are trying to name is called auto-boxing. So what actually happens is that a primitive is converted to its wrapper type when a method of the wrapper type is invoked. Put simple:
var s = 'test';
Is a primitive data type. It has no methods, it is nothing more ...
Creating a left-arrow button (like UINavigationBar's “back” style) on a UIToolbar
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I used the following psd that I derived from http://www.teehanlax.com/blog/?p=447
http://www.chrisandtennille.com/pictures/backbutton.psd
I then just created a custom UIView that I use in the customView property of the toolbar item.
Works well for me.
Edit: As pointed out by Prairie...
When are you supposed to use escape instead of encodeURI / encodeURIComponent?
...e it!
escape() is defined in section B.2.1.2 escape and the introduction text of Annex B says:
... All of the language features and behaviours specified in this annex have one or more undesirable characteristics and in the absence of legacy usage would be removed from this specification. ...
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