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Create a dictionary with list comprehension
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{key: value for (key, value) in iterable}
Note: this is for Python 3.x (and 2.7 upwards). Formerly in Python 2.6 and earlier, the dict built-in could receive an iterable of key/value pairs, so you can pass it a list comprehension or generator expression. For example:
dict((key, func(key)) for key...
Ruby on Rails: how to render a string as HTML?
...g raw works fine, but all it's doing is converting the string to a string, and then calling html_safe. When I know I have a string, I prefer calling html_safe directly, because it skips an unnecessary step and makes it clearer what's going on. Details about string-escaping and XSS protection are in ...
FragmentPagerAdapter Exists Only In Android.Support.V4.App (and not Android.App)
I cannot find find FragmentPagerAdapter within Android.App.
5 Answers
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How do I decode HTML entities in Swift?
I am pulling a JSON file from a site and one of the strings received is:
23 Answers
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Installed Ruby 1.9.3 with RVM but command line doesn't show ruby -v
...f /usr/share/ruby-rvm /etc/rvmrc /etc/profile.d/rvm.sh
open new terminal and validate environment is clean from old RVM settings (should be no output):
env | grep rvm
if there was output, try to open new terminal, if it does not help then restart your computer.
install RVM:
\curl -L https://g...
Testing for empty or nil-value string [duplicate]
...t’s false, empty, or a whitespace string. For example, "", " ", nil, [], and {} are all blank.
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Linux command to list all available commands and aliases
Is there a Linux command that will list all available commands and aliases for this terminal session?
20 Answers
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Can you create nested WITH clauses for Common Table Expressions?
...wered Sep 11 '09 at 22:12
David AndresDavid Andres
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Find a value in an array of objects in Javascript [duplicate]
...have an array of unnamed objects, which contain an array of named objects, and I need to get the object where "name" is "string 1". Here is an example array.
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What's the difference between echo, print, and print_r in PHP?
I use echo and print_r much, and almost never use print .
11 Answers
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