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Exit Shell Script Based on Process Exit Code
...ble so you would have something like:
ls -al file.ext
rc=$?; if [[ $rc != 0 ]]; then exit $rc; fi
You need to be careful of piped commands since the $? only gives you the return code of the last element in the pipe so, in the code:
ls -al file.ext | sed 's/^/xx: /"
will not return an error cod...
How to get Enum Value from index in Java?
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230
Try this
Months.values()[index]
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How can I measure the speed of code written in PHP? [closed]
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10 Answers
10
Active
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How to sort an array of objects by multiple fields?
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30 Answers
30
Active
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Java 8 Stream and operation on arrays
... a = ...
int[] b = ...
int[] result = new int[a.length];
IntStream.range(0, a.length)
.forEach(i -> result[i] = a[i] * b[i]);
EDIT
Commenter @Holger points out you can use the map method instead of forEach like this:
int[] result = IntStream.range(0, a.length).map(i -> a[i] * b[...
uwsgi invalid request block size
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208
I aslo ran into same issue while following some tutorial.
The problem was that I set the option...
How does git compute file hashes?
... human-readable integer), followed by a NUL character
$ echo -e 'blob 14\0Hello, World!' | shasum
8ab686eafeb1f44702738c8b0f24f2567c36da6d
Source: http://alblue.bandlem.com/2011/08/git-tip-of-week-objects.html
share
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cannot load such file — zlib even after using rvm pkg install zlib
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201
I ended up installing zlib from apt-get and then reinstalling ruby to not use the rvm directory...
Why is rbindlist “better” than rbind?
...es where one has factor and other has character type for a column (Bug #2650)
It has problems with duplicate column names
see
Warning message: in rbindlist(allargs) : NAs introduced by coercion: possible bug in data.table? (Bug #2384)
rbind.data.frame rownames can be frustrating
rbindlist ca...
Comparing strings with == which are declared final in Java
...le (non-final version) is compiled to the following byte code:
Code:
0: ldc #2; //String str
2: astore_1
3: ldc #3; //String ing
5: astore_2
6: new #4; //class java/lang/StringBuilder
9: dup
10: invokespecial #5; //Method java/lang/StringBuilder."&l...