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Best Practice - NSError domains and codes for your own project/app
...yInternalError = [NSError errorWithDomain:@"com.davedelong.myproject" code:42 userInfo:someUserInfo];
The third part of the domain (@"myproject") is just used to differentiate the errors from this project ("My Project") from errors in another project ("My Other Project" => com.davedelong.myothe...
Why is Python 3.x's super() magic?
...class Foo(Bar):
def baz(self):
return super(Foo, self).baz() + 42
Spam = Foo
Foo = something_else()
Spam().baz() # liable to blow up
The same applies to using class decorators where the decorator returns a new object, which rebinds the class name:
@class_decorator_returning_new_cla...
Using git, how do I ignore a file in one branch but have it committed in another branch?
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84
This solution appears to work only for certain, patched versions of git. See a new answer poi...
Find the Smallest Integer Not in a List
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answered Oct 20 '09 at 6:14
Ants AasmaAnts Aasma
45.7k1212 gold badges8383 silver badges8787 bronze badges
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How do I get the picture size with PIL?
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edited Jan 4 '18 at 12:29
Gary S.
3,58722 gold badges1717 silver badges3131 bronze badges
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Reset select2 value and show placeholder
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244
You must define the select2 as
$("#customers_select").select2({
placeholder: "Select a cus...
Persistence unit as RESOURCE_LOCAL or JTA?
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4 Answers
4
Active
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Combine multiple Collections into a single logical Collection?
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114
With Guava, you can use Iterables.concat(Iterable<T> ...), it creates a live view of all t...
Given a number, find the next higher number which has the exact same set of digits as the original n
...in the correct place in O(n)).
An example will make this more clear:
123456784987654321
start with a number
123456784 987654321
^the first place from the right where the left-digit is less than the right
Digit "x" is 4
123456784 987654321
^find the smallest dig...
Changing one character in a string
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answered Aug 4 '09 at 16:41
scvalexscvalex
12.7k22 gold badges3131 silver badges4242 bronze badges
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