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How to remove an element from a list by index
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1820
Use del and specify the index of the element you want to delete:
>>> a = [0, 1, 2, 3, ...
Handling applicationDidBecomeActive - “How can a view controller respond to the app becoming Active?
... notification be included, just replace the _ with notification.
Next, we set up the notification to observe for the app becoming active.
func setupObserver() {
_ = NotificationCenter.default.addObserver(forName: .UIApplicationDidBecomeActive,
obj...
no acceptable C compiler found in $PATH when installing python
...make, etc.
– Spectral
Jul 9 '14 at 20:06
2
Is there an alternative for zypper?
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Get color value programmatically when it's a reference (theme)
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Emanuel MoecklinEmanuel Moecklin
24.8k1010 gold badges6363 silver badges7676 bronze badges
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How to apply multiple transforms in CSS?
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1047
You have to put them on one line like this:
li:nth-child(2) {
transform: rotate(15deg) tr...
JavaScript and Threads
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110
See http://caniuse.com/#search=worker for the most up-to-date support info.
The following was t...
How do I mock an autowired @Value field in Spring with Mockito?
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You can use the magic of Spring's ReflectionTestUtils.setField in order to avoid making any modifications whatsoever to your code.
Check out this tutorial for even more information, although you probably won't need it since the method is very easy to use
UPDATE
Since the intr...
A route named “x” is already in the route collection. Route names must be unique. Exception with ASP
...Config.cs. Trick is of course to put a break where the route name is being set and look at the call stack.
– Reid
Mar 28 '17 at 2:39
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Should you always favor xrange() over range()?
...original)
+++ range_test.py (refactored)
@@ -1,7 +1,7 @@
for x in range(20):
- a=range(20)
+ a=list(range(20))
b=list(range(20))
c=[x for x in range(20)]
d=(x for x in range(20))
- e=xrange(20)
+ e=range(20)
As you can see, when used in a for loop or comprehension, or ...
Rails find record with zero has_many records associated [duplicate]
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Bah, found it here: https://stackoverflow.com/a/5570221/417872
City.includes(:photos).where(photos: { city_id: nil })
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