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Why are there two kinds of functions in Elixir?
I'm learning Elixir and wonder why it has two types of function definitions:
8 Answers
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How to frame two for loops in list comprehension python
...ich they appear in traditional loop approach. Outer most loop comes first, and then the inner loops subsequently.
So, the equivalent list comprehension would be:
[entry for tag in tags for entry in entries if tag in entry]
In general, if-else statement comes before the first for loop, and if you...
Checking if a key exists in a JavaScript object?
...r, if you want to particularly test for properties of the object instance (and not inherited properties), use hasOwnProperty:
obj.hasOwnProperty("key") // true
For performance comparison between the methods that are in, hasOwnProperty and key is undefined, see this benchmark
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CSS: how to position element in lower right?
...m trying to position the text element "Bet 5 days ago" in the lower right-hand corner. How can I accomplish this? And, more importantly, please explain so I can conquer CSS!
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How to replace a single word under cursor?
... slashes (e.g. /usr/bin/bash or 1222.333)? It looks like vim interprets / and . as end of the word and won't select the entire string.
– Alexander Cska
May 1 at 21:47
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How to randomly sort (scramble) an array in Ruby?
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And if you want to implement it yourself: en.wikipedia.org/wiki/Fisher-Yates_shuffle
– Joey
Nov 29 '09 at 18:52
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Permanently adding a file path to sys.path in Python
...m various other files, so I decided to add example_file.py to sys.path and import this file in another file to use the file. To do so, I ran the following in IPython.
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How to handle AccessViolationException
.... The odd thing is that I have wrapped my call in a try catch, which has handlers for AccessViolationException, COMException and everything else, but when Visual Studio (2010) intercepts the AccessViolationException, the debugger breaks on the method call (doc.OCR), and if I step through, it contin...
Why can I create a class named “var”?
...rd, so from the context the compiler is able to decide which is your class and which is the contextual keyword, and no confusion arises.
a contextual keyword is:
used to provide a specific meaning in the code, but it is not a
reserved word in C#.
so as its not reserved you can use it.
As p...
What is the meaning of addToBackStack with null parameter?
...ction is saved to the
back stack so the user can reverse the transaction and bring back the
previous fragment by pressing the Back button.
If you add multiple changes to the transaction (such as another add()
or remove()) and call addToBackStack(), then all changes applied
before you ca...