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Renaming table in rails
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This will also migrate any indexes from :old_table_name to :new_table_name
– Gavin Miller
Sep 18 '13 at 20:45
7
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How do I wrap link_to around some html ruby code?
... Not necessarily, it might be the case that the HTML is being generated from somewhere within your own app which you know to be safe. Still, it's best to avoid this in 99% of situations. (Not to mention the above code has a mistake anyway, it should start with <%=, not <%.)
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Escape double quotes in a string
...still part of your string.
Check out Escape Sequences and String literals from MSDN.
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Code Golf: Lasers
...s to write w=p-G instead of w=p-G+1. Also, this finishes off the ?: chain from the M's.
for(;
q+=m,
Move the light by the movement vector.
m=
*q&4
?(*q&1?-1:1)*(
m/w?m/w:m*w
)
Reflect the movement vector.
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What's an elegant way to conditionally add a class to an HTML element in a view?
...ue is inspired by an add-on called classNames (formerly known as classSet) from Facebook’s React front-end framework.
Using in your Rails projects
As of now, the class_names function does not exist in Rails, but this article shows you how to add or implement it into your projects.
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Inline code highlighting in reStructuredText
...more I stumbled upon the document reStructuredText Interpreted Text Roles. From this document:
Interpreted text uses backquotes (`) around the text. An explicit role marker may optionally appear before or after the text, delimited with colons. For example:
This is `interpreted text` using the defau...
How to show popup message like in Stack Overflow
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Here's what I found from viewing the StackOverflow source. Hopefully saves some time for someone.
The showNotification function is used for all those popup messages.
var showNotification=function(jClicked,msg){master.showErrorPopup(jClicked.p...
How to use Greek symbols in ggplot2?
...n
Φ φ phi
Χ χ chi
Ψ ψ psi
Ω ω omega
EDIT: Copied from comments, when using in conjunction with other words use like: expression(Delta*"price")
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Javascript Split string on UpperCase Characters
...e lookahead to keep the capital letters
that will also solve the problem from the comment:
"thisIsATrickyOne".split(/(?=[A-Z])/);
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How to check if remote branch exists on a given remote repository?
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This will not pull branches from remote before checking, so you don't get the latest remote state.
– siemanko
Aug 9 '19 at 18:26
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