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Find index of last occurrence of a substring in a string
...eversed (i.e. original) string.
Watch out, though! If target is more than one character, you probably won't find it in the reversed string. To fix this, use last_pos = len(s) - 1 - s[::-1].index(target[::-1]), which searches for a reversed version of target.
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How to check if array element exists or not in javascript?
... for if(arrayName[index] === undefined) you may use even shorter one which is if(!arrayName[index])
– Park JongBum
Jul 17 '18 at 14:09
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Adding a directory to $LOAD_PATH (Ruby)
... I see the advantages of doing this in case you're not working with a gem. One seems more verbose than the other, obviously, but is there a reason to go with one over the other?
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Why / when would it be appropriate to override ToString?
...and you should to. I can't tell you how my code has improved just by this one guideline for ToString. The same thing goes for things like IEquatable(Of T) and IComparable(Of T). These things make your code very functional, and you won't regret taking the extra time to implement any of it.
Personal...
Assigning a variable NaN in python without numpy
...gt;> import math
>>> math.isnan(nan)
True
Before Python 3.5, one could use float("nan") (case insensitive).
Note that checking to see if two things that are NaN are equal to one another will always return false. This is in part because two things that are "not a number" cannot (strict...
ERROR 1044 (42000): Access denied for user ''@'localhost' to database 'db'
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This one worked for me, it was working fine initially and then suddenly stopped working one day. Any idea, why this happens in the first place?
– mu 無
Feb 4 '14 at 10:29
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Add Keypair to existing EC2 instance
...mote EC2 instance, however, seems distant and inaccessible when you are in one of these situations. Fortunately, AWS provides us with the power and flexibility to be able to recover a system like this, provided that we are running EBS boot instances and not instance-store.
The approach on EC2 is so...
What are the various “Build action” settings in Visual Studio project properties and what do they do
...plorer. There are a number of options and it's difficult to know what each one of them will do.
7 Answers
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Difference between the 'controller', 'link' and 'compile' functions when defining a directive
...ers use link. The tabs example on the angular homepage uses controller for one and link for another directive. What is the difference between the two?
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Converting bytes to megabytes
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BTW: Hard drive manufacturers don't count as authorities on this one!
Oh, yes they do (and the definition they assume from the S.I. is the correct one). On a related issue, see this post on CodingHorror.
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