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How do I set up email confirmation with Devise?
...et up Devise's signup confirmation email from scratch (in both development and production), i.e. if you don't have Action Mailer set up?
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How to implement a queue with three stacks?
...stion in an algorithms book ( Algorithms, 4th Edition by Robert Sedgewick and Kevin Wayne).
5 Answers
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Java8 Lambdas vs Anonymous classes
Since Java8 has been recently released and its brand new lambda expressions looks to be really cool, I was wondering if this means the demise of the Anonymous classes that we were so used to.
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Switching between Android Navigation Drawer image and Up caret when using fragments
When using the Navigation Drawer the Android devs are recommending that in the ActionBar "only those screens that are represented in the Navigation Drawer should actually have the Navigation Drawer image" and that "all other screens have the traditional up carat."
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Find object in list that has attribute equal to some value (that meets any condition)
... None)
This gets the first item from the list that matches the condition, and returns None if no item matches. It's my preferred single-expression form.
However,
for x in test_list:
if x.value == value:
print("i found it!")
break
The naive loop-break version, is perfectly Pytho...
How to access command line parameters?
The Rust tutorial does not explain how to take parameters from the command line. fn main() is only shown with an empty parameter list in all examples.
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Pandas DataFrame Groupby two columns and get counts
I have a pandas dataframe in the following format:
6 Answers
6
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How to set Meld as git mergetool
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CenterOrbit mentions in the comments for Mac OS to install homebrew, and then:
brew cask install meld
git config --global merge.tool meld
git config --global diff.guitool meld
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Testing if a checkbox is checked with jQuery
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Use .is(':checked') to determine whether or not it's checked, and then set your value accordingly.
More information here.
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How to detect if app is being built for device or simulator in Swift
...pect the TARGET_OS_SIMULATOR variable (or TARGET_IPHONE_SIMULATOR in iOS 8 and below), which is truthy on a simulator.
Please notice that this is different and slightly more limited than using a preprocessor flag. For instance you won't be able to use it in place where a if/else is syntactically in...