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What is the most elegant way to remove a path from the $PATH variable in Bash?
Or more generally, how do I remove an item from a colon-separated list in a Bash environment variable?
33 Answers
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how to prevent “directory already exists error” in a makefile when using mkdir
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On UNIX Just use this:
mkdir -p $(OBJDIR)
The -p option to mkdir prevents the error message if the directory exists.
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Finding the max value of an attribute in an array of objects
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To find the maximum y value of the objects in array:
Math.max.apply(Math, array.map(function(o) { return o.y; }))
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Grep characters before and after match?
...efore and 4 characters after
$> echo "some123_string_and_another" | grep -o -P '.{0,3}string.{0,4}'
23_string_and
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How do you attach and detach from Docker's process?
I can attach to a docker process but Ctrl + c doesn't work to detach from it. exit basically halts the process.
15 Ans...
Entity Framework and SQL Server View
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We had the same problem and this is the solution:
To force entity framework to use a column as a primary key, use ISNULL.
To force entity framework not to use a column as a primary key, use NULLIF.
An easy way to apply this is to wrap the...
Running Command Line in Java [duplicate]
Is there a way to run this command line within a Java application?
8 Answers
8
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How can you make a custom keyboard in Android?
...stom keyboard. I don't know how to do it using XML and Java. The following picture is a model of the keyboard I want to make. It only needs numbers.
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Fragment transaction animation: slide in and slide out
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UPDATE For Android v19+ see this link via @Sandra
You can create your own animations. Place animation XML files in res > anim
enter_from_left.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http:/...
What is the difference between DSA and RSA?
It appears they are both encryption algorithms that require public and private keys. Why would I pick one versus the other to provide encryption in my client server application?
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