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How can I pad an integer with zeros on the left?
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Use java.lang.String.format(String,Object...) like this:
String.format("%05d", yournumber);
for zero-padding with a length of 5. For hexadecimal output replace the d with an x as in "%05x".
The full formatting options are documented as part of java.util.Formatter.
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How can I convert the “arguments” object to an array in JavaScript?
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730
+100
ES6 usin...
'float' vs. 'double' precision
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edited Dec 30 '14 at 20:59
answered Feb 23 '11 at 23:24
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How do I check out a specific version of a submodule using 'git submodule'?
...ing the change to the parent repository.
$ cd submodule
$ git checkout v2.0
Previous HEAD position was 5c1277e... bumped version to 2.0.5
HEAD is now at f0a0036... version 2.0
git-status on the parent repository will now report a dirty tree:
# On branch dev [...]
#
# modified: submodule (n...
Python: Using .format() on a Unicode-escaped string
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>>> s = u'\u2265'
>>> print s
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>>> print "{0}".format(s)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
UnicodeEncodeError: 'ascii' codec can't encode character u'\u2265' in position 0: ordinal not in range(128)
>>> print...
Javascript: formatting a rounded number to N decimals
...contain information about significant digits; the value 2 is the same as 2.0000000000000. It's when you turn the rounded value into a string that you have make it display a certain number of digits.
You could just add zeroes after the number, something like:
var s = number.toString();
if (s.indexO...
Python idiom to return first item or None
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answered Dec 13 '08 at 23:31
jfsjfs
326k132132 gold badges817817 silver badges14381438 bronze badges
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Calling shell functions with xargs
...orting the function should do it (untested):
export -f echo_var
seq -f "n%04g" 1 100 | xargs -n 1 -P 10 -I {} bash -c 'echo_var "$@"' _ {}
You can use the builtin printf instead of the external seq:
printf "n%04g\n" {1..100} | xargs -n 1 -P 10 -I {} bash -c 'echo_var "$@"' _ {}
Also, using ret...
Why does Sql Server keep executing after raiserror when xact_abort is on?
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edited Oct 10 '13 at 20:25
Ian Boyd
211k216216 gold badges774774 silver badges10851085 bronze badges
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arrayfun can be significantly slower than an explicit loop in matlab. Why?
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101
You can get the idea by running other versions of your code. Consider explicitly writing out th...