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To ternary or not to ternary? [closed]
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Use it for simple expressions only:
int a = (b > 10) ? c : d;
Don't chain or nest ternary operators as it hard to read and confusing:
int a = b > 10 ? c < 20 ? 50 : 80 : e == 2 ? 4 : 8;
Moreover, when using ternary operator, consider formatting the code in a way t...
How can I represent an 'Enum' in Python?
...gt;>> Numbers = enum('ZERO', 'ONE', 'TWO')
>>> Numbers.ZERO
0
>>> Numbers.ONE
1
Support for converting the values back to names can be added this way:
def enum(*sequential, **named):
enums = dict(zip(sequential, range(len(sequential))), **named)
reverse = dict((val...
What is the difference between Strategy pattern and Dependency Injection?
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109
DI and Strategy work in the same way, but Strategy is used for more fine-grained and short-live...
Stopping fixed position scrolling at a certain point?
... I want the element to stop scrolling at a certain point, say when it is 250px from the top of the page, is this possible? Any help or advice would be helpful thanks!
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Best way to merge two maps and sum the values of same key?
...rt Scalaz._
import Scalaz._
scala> val map1 = Map(1 -> 9 , 2 -> 20)
map1: scala.collection.immutable.Map[Int,Int] = Map(1 -> 9, 2 -> 20)
scala> val map2 = Map(1 -> 100, 3 -> 300)
map2: scala.collection.immutable.Map[Int,Int] = Map(1 -> 100, 3 -> 300)
scala> map1 |...
How to center a (background) image within a div?
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answered Feb 18 '11 at 10:39
Jake LucasJake Lucas
9,57677 gold badges3535 silver badges3838 bronze badges
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When to use reinterpret_cast?
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edited Aug 30 '19 at 8:57
leiyc
86555 silver badges1919 bronze badges
answered Feb 21 '09 ...
How to replace (or strip) an extension from a filename in Python?
...hat you want.
import os
print os.path.splitext('/home/user/somefile.txt')[0]+'.jpg'
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Sending event when AngularJS finished loading
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204
Just a hunch: why not look at how the ngCloak directive does it? Clearly the ngCloak directive ...
How can I declare and use Boolean variables in a shell script?
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Revised Answer (Feb 12, 2014)
the_world_is_flat=true
# ...do something interesting...
if [ "$the_world_is_flat" = true ] ; then
echo 'Be careful not to fall off!'
fi
Original Answer
Caveats: https://stackoverflow.com/a/21210966/89391
the_w...