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Command substitution: backticks or dollar sign / paren enclosed? [duplicate]
... forms in one script would make that script less likely to be portable: In order for the script to work properly, the shell that's executing it has to support BOTH forms, not just one form or the other.
For making a shell script understandable, I'd personally prefer sticking to one form or the othe...
Java, List only subdirectories from a directory, not files
... were using is actually the curent path, so it will always return true. In order to see if the child is a subdirectory or not you need to test that child.
File file = new File("/path/to/directory");
String[] directories = file.list(new FilenameFilter() {
@Override
public boolean accept(File cur...
How to print last two columns using awk
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Create a new object from type parameter in generic class
...ne of the above examples worked for me as they required a concrete type in order to call the factory method.
After researching for awhile on this and unable to find a solution online, I discovered that this appears to work.
protected activeRow: T = {} as T;
The pieces:
activeRow: T = {} <...
ImportError: No module named PIL
...n that is installed you can do
import PIL
or
from PIL import Image
etc..
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Is there a Google Voice API? [closed]
...an API to work with voicemails, send/receive SMS messages, initiate calls, etc.
6 Answers
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Replacements for switch statement in Python?
...euser but the fact they can "overlap" is a feature. You just make sure the order is the priority in which matches should occur. As for repeated x: just do an x = the.other.thing before. Typically, you'd have a single if, multiple elif and a single else, as that's easier to understand.
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Adding a column to an existing table in a Rails migration
..., you're adding the column and then creating the table.
If you change the order it might work. Or, as you're modifying an existing migration, just add it to the create table instead of doing a separate add column.
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Choosing the default value of an Enum type without having to change values
...ce of an object." error. How to fix it? Note: I use an extension method in order to display enum's Descriptions, but not sure how to avoid the error in the helper method (GetDescription) defined on this page
– Jack
Dec 16 '15 at 16:55
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Offset a background image from the right using CSS
...hat works perfectly:
background: url('/img.png') no-repeat right center;
border-right: 10px solid transparent;
I used it since the CSS3 feature of specifying offsets proposed in the answer marked as solving the question is not supported in browsers so well yet. E.g.
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