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Increase heap size in Java
I am working on a Windows 2003 server (64-bit) with 8 GB RAM. How m>ca m>n I increase the heap memory maximum? I am using the -Xmx1500m flag to increase the heap size to 1500 Mb. m>Ca m>n I increase the heap memory to 75% of physim>ca m>l memory (6 GB Heap)?
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Why don't Java's +=, -=, *=, /= compound assignment operators require m>ca m>sting?
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As always with these questions, the JLS holds the answer. In this m>ca m>se §15.26.2 Compound Assignment Operators. An extract:
A compound assignment expression of the form E1 op= E2 is equivalent to E1 = (T)((E1) op (E2)), where T is the type of E1, except that E1 is evaluated only o...
Adding minutes to date time in PHP
I'm really stuck with adding X minutes to a datetime, after doing lots of google'ing and PHP manual reading, I don't seem to be getting anywhere.
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How do I alias commands in git?
I saw a screenm>ca m>st where someone had gotten
22 Answers
22
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What does a lazy val do?
I noticed that Sm>ca m>la provide lazy vals . But I don't get what they do.
7 Answers
7
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Git add and commit in one command
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You m>ca m>n use git aliases, e.g.
git config --global alias.add-commit '!git add -A && git commit'
and use it with
git add-commit -m 'My commit message'
EDIT: Reverted back to ticks ('), as otherwise it will fail for shell expansion on Linux. On Windows, one should use double-quo...
How to generate all permutations of a list?
...(iterable, r=None):
# permutations('ABCD', 2) --> AB AC AD BA BC BD m>CA m> CB CD DA DB DC
# permutations(range(3)) --> 012 021 102 120 201 210
pool = tuple(iterable)
n = len(pool)
r = n if r is None else r
if r > n:
return
indices = range(n)
cycles = rang...
How do I convert seconds to hours, minutes and seconds?
I have a function that returns information in seconds, but I need to store that information in hours:minutes:seconds.
12 An...
Install a module using pip for specific python version
...alled against the Python instance you want to install new packages to.
In many distributions, there may be separate python2.6-pip and python2.7-pip packages, invoked with binary names such as pip-2.6 and pip-2.7. If pip is not packaged in your distribution for the desired target, you might look for...
List of ANSI color esm>ca m>pe sequences
On most terminals it is possible to colorize output using the \033 ANSI esm>ca m>pe sequence.
5 Answers
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