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Guards vs. if-then-else vs. cases in Haskell
...le decision you need to make. Nested if..then..else-expressions are very uncommon in Haskell, and guards should almost always be used instead.
let absOfN =
if n < 0 -- Single binary expression
then -n
else n
Every if..then..else expression can be replaced by a guard if it is at the top ...
What is a StoryBoard ID and how can i use this?
...fier:@"MyViewController"];
[self presentViewController:vc animated:YES completion:nil];
}
This will create a MyCustomViewController based on the storyboard ViewController you named "MyViewController" and present it above your current View Controller
And if you are in your app delegate you cou...
how do you filter pandas dataframes by multiple columns
...ke you could answer it. Relates to pandas dataframes again. stackoverflow.com/questions/22086619/…
– yoshiserry
Feb 28 '14 at 5:26
1
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Extracting substrings in Go
...se note that this method will not work with Unicode strings! groups.google.com/forum/#!msg/golang-nuts/ZeYei0IWrLg/…
– Melllvar
Aug 24 '13 at 0:02
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How do you get current active/default Environment profile programmatically in Spring?
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Django admin: How to display a field that is marked as editable=False' in the model?
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At runtime, find all classes in a Java application that extend a base class
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I use org.reflections:
Reflections reflections = new Reflections("com.mycompany");
Set<Class<? extends MyInterface>> classes = reflections.getSubTypesOf(MyInterface.class);
Another example:
public static void main(String[] args) throws IllegalAccessException, Instantiatio...
How do I pull files from remote without overwriting local files?
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why not just git commit local changes beforing git pull ?
– Don Cheadle
Oct 20 '14 at 14:58
10
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How to delete the last n commits on Github and locally?
I'm trying to delete the last 2 commits from one of my GitHub repositories. I've tried as suggested here : git push -f origin HEAD^^:master . It seems that it works, as the last two commits are removed.
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How to create a static library with g++?
...Do I need to create the .o and the .a? I would also like to know how can I compile a static library in and use it in other .cpp code. I have header.cpp , header.hpp . I would like to create header.a . Test the header.a in test.cpp . I am using g++ for compiling.
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