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Understanding the Rails Authenticity Token
...ed to every layout that renders
forms by including csrf_meta_tags in the HTML head.
Notes
Keep in mind, Rails only verifies not idempotent methods (POST, PUT/PATCH and DELETE). GET request are not checked for authenticity token. Why? because the HTTP specification states that GET requests is id...
Is multiplication and division using shift operators in C actually faster?
... we can look at a few facts. From http://www.penguin.cz/~literakl/intel/s.html#SAL and http://www.penguin.cz/~literakl/intel/i.html#IMUL we get an idea of x86 clock cycles needed for arithmetic shift and multiplication. Say we stick to "486" (the newest one listed), 32 bit registers and immedia...
How do I check how many options there are in a dropdown menu?
...scendant selector to select all <option>'s within a <select>.
HTML:
<select id="myDropDown">
<option>1</option>
<option>2</option>
.
.
.
</select>
JQuery:
var numberOfOptions = $('select#myDropDown option').length
And a quick note, often you wil...
Getting file size in Python? [duplicate]
...
You can use os.stat(path) call
http://docs.python.org/library/os.html#os.stat
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Sorting dictionary keys in python [duplicate]
...t list is not a keyword (c.f. docs.python.org/3/reference/lexical_analysis.html#keywords), so my program fragment would (bytecode-)compile and run. It is however a name in the __builtins__ namespace, and it is bad practice to shadow that name—with a locale variable named list—and horrible to ov...
Disable spell checking on IntelliJ IDEA
...se comment in file
like <!--suppress SpellCheckingInspection --> in html.
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Are nested transactions allowed in MySQL?
...of its synonyms.
https://dev.mysql.com/doc/refman/5.7/en/implicit-commit.html
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Colon (:) in Python list index [duplicate]
...
slicing operator. http://docs.python.org/tutorial/introduction.html#strings and scroll down a bit
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What does preceding a string literal with “r” mean? [duplicate]
... You forgot this: docs.python.org/reference/lexical_analysis.html#string-literals
– S.Lott
Jan 24 '11 at 11:09
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Why should we use sp for font sizes in Android? [duplicate]
... the device.
http://developer.android.com/guide/practices/screens_support.html
Similarly, you should prefer the sp (scale-independent pixel) to define text sizes. The sp scale factor depends on a user setting and the system scales the size the same as it does for dp.
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