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How to assign the output of a Bash command to a variable? [duplicate]
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In this specific case, note that bash has a variable called PWD that contains the current directory: $PWD is equivalent to `pwd`. (So do other shells, this is a standard feature.) So you can write your script like this:
#!/bin/bash
until [ "$PWD" = "/" ]; do
echo "$PWD"
ls ...
What does the ^ operator do in Java?
...y for this task.
Horner's scheme
Addressing your specific need, you actually don't need to compute various powers of 10. You can use what is called the Horner's scheme, which is not only simple but also efficient.
Since you're doing this as a personal exercise, I won't give the Java code, but he...
Count the items from a IEnumerable without iterating?
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I usually just grab List and IList out of habit. But especially if you want to implement them yourself ICollection is easier and also has the Count property. Thanks!
– Mendelt
Oct 3 '08 at 22...
Apache Commons equals/hashCode builder [closed]
...ildren);
} else{
return false;
}
}
Note: this code originally referenced Guava, but as comments have pointed out, this functionality has since been introduced in the JDK, so Guava is no longer required.
As you can see the Guava / JDK version is shorter and avoids superfluous helpe...
set the width of select2 input (through Angular-ui directive)
...ero or more pills.
But if there was one or more pills, and I deleted them all, it would shrink to the smallest width. My solution was simply:
$("#myselect").select2({ width: '100%' });
share
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Is it bad to have my virtualenv directory inside my git repository?
...s --distribute .env && source .env/bin/activate && pip install -r requirements.txt
– RyanBrady
Jul 6 '11 at 2:39
2
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Update a record without first querying?
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@Gabriel Won't this update all properties though? What if I only want to modify a single one?
– David Pfeffer
Aug 15 '12 at 0:45
22
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Do you have to put Task.Run in a method to make it async?
... numbers for the sake of this example, granted, it's no processing time at all, it's just a matter of formulating an example here.
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What is the difference between public, private, and protected?
...ly.
protected scope when you want to make your property/method visible in all classes that extend current class including the parent class.
If you don't use any visibility modifier, the property / method will be public.
More: (For comprehensive information)
PHP Manual - Visibility
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Run a PostgreSQL .sql file using command line arguments
...n use the following by navigating to the bin folder of your PostgreSQL install:
12 Answers
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