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Bash: Strip trailing linebreak from output
...I disagree with the OP's decision to choose the accepted answer. I believe one should avoid using 'xargs' where possible. Yes, it's a cool toy. No, you do not need it here.
If your expected output may contain multiple lines, you have another decision to make:
If you want to remove MULTIPLE newli...
Should flux stores, or actions (or both) touch external services?
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I've seen the flux pattern implemented both ways, and after having done both myself (initially going with the former approach), I believe that stores should be dumb recipients of data from the actions, and that asynchronous processing of writes should live in the action creators. (Async reads...
viewWillDisappear: Determine whether view controller is being popped or is showing a sub-view contro
...'t perform my actions on viewDidLoad as it's only called once! Hmm, tricky one!
– Michael Waterfall
Nov 30 '09 at 11:56
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Why does “split” on an empty string return a non-empty array?
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If you split an orange zero times, you have exactly one piece - the orange.
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Change multiple files
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Better yet:
for i in xa*; do
sed -i 's/asd/dfg/g' $i
done
because nobody knows how many files are there, and it's easy to break command line limits.
Here's what happens when there are too many files:
# grep -c aaa *
-bash: /bin/grep: Argument list too long
# for i in *; do g...
node.js shell command execution
... child process and return immediately regardless of whether some, all, or none of the data has been read off of stdout. As such, when you run
console.log(foo.stdout);
you get whatever happens to be stored in foo.stdout at the moment, and there's no guarantee what that will be because your child p...
How does delete[] “know” the size of the operand array?
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ONE OF THE approaches for compilers is to allocate a little more memory and to store a count of elements in a head element.
Example how it could be done:
Here
int* i = new int[4];
compiler will allocate sizeof(int)*5 b...
Iterating through a list in reverse order in java
I'm migrating a piece of code to make use of generics. One argument for doing so is that the for loop is much cleaner than keeping track of indexes, or using an explicit iterator.
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os.walk without digging into directories below
...s struggling with how to "delete" dirs. I had tried dirs = [] and dirs = None but those didn't work. map(dirs.remove, dirs) worked, but with some unwanted '[None]' messages printed. So, why del dirs[:] specifically?
– Zach Young
Oct 12 '12 at 0:53
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Vim clear last search highlighting
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I think this is a much better solution than the one that's actually been accepted -- either this one or the other one where it's mapped to <ESC> instead.
– Stewart Johnson
Sep 1 '10 at 22:49
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