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What is the difference between Trap and Interrupt?
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A trap is an exception in a user process. It's caused by division by zero or invalid memory access. It's also the usual way to invoke a kernel routine (a system call) because those run with a higher priority than user code. Handling is syn...
Remove an element from a Bash array
...n working with strings
done
Caveat
This technique actually removes prefixes matching $delete from the elements, not necessarily whole elements.
Update
To really remove an exact item, you need to walk through the array, comparing the target to each element, and using unset to delete an exact mat...
How to escape a pipe char in a code statement in a markdown table?
...ant to build a table containing pieces of code in Markdown. It works fine except when I put a pipe char (i.e. | ) between the backtick (i.e. ` ) chars.
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Multiple Updates in MySQL
...'s possible - you can use INSERT ... ON DUPLICATE KEY UPDATE.
Using your example:
INSERT INTO table (id,Col1,Col2) VALUES (1,1,1),(2,2,3),(3,9,3),(4,10,12)
ON DUPLICATE KEY UPDATE Col1=VALUES(Col1),Col2=VALUES(Col2);
shar...
How to define hash tables in Bash?
...the equivalent of Python dictionaries but in Bash (should work across OS X and Linux).
15 Answers
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What is the “reactor” in Maven?
... can manipulate the maven reactor and that the reactor is a plugin. What exactly is the reactor?
2 Answers
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What are your favorite extension methods for C#? (codeplex.com/extensionoverflow)
Let's make a list of answers where you post your excellent and favorite extension methods .
150 Answers
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Animate the transition between fragments
...CustomAnimations as well as FragmentTransaction.setTransition.
Here's an example on using setCustomAnimations from ApiDemos' FragmentHideShow.java:
ft.setCustomAnimations(android.R.animator.fade_in, android.R.animator.fade_out);
and here's the relevant animator XML from res/animator/fade_in.xml:...
Python syntax for “if a or b or c but not all of them”
... sum(conditions) can go wrong if any of them returns 2 for example, which is True.
– eumiro
May 13 '13 at 12:35
7
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Git diff to show only lines that have been modified
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What you want is a diff with 0 lines of context. You can generate this with:
git diff --unified=0
or
git diff -U0
You can also set this as a config option for that repository:
git config diff.context 0
To have it set globally, for any repository:
git config -...