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How do the post increment (i++) and pre increment (++i) operators work in Java?
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Does this help?
a = 5;
i=++a + ++a + a++; =>
i=6 + 7 + 7; (a=8)
a = 5;
i=a++ + ++a + ++a; =>
i=5 + 7 + 8; (a=8)
The main point is that ++a increments the value and immediately returns it.
a++ also increments the value (in the background) but returns unchanged value of...
What's the difference between “mod” and “remainder”?
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Grijesh Chauhan
51.1k1515 gold badges117117 silver badges179179 bronze badges
answered Dec 3 '12 at 12:54
David SchwartzDavid Schwartz
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Is it possible to install another version of Python to Virtualenv?
...re able to write too.
You can follow the instructions here.
For Python 2.7.1
Python source
mkdir ~/src
mkdir ~/.localpython
cd ~/src
wget http://www.python.org/ftp/python/2.7.1/Python-2.7.1.tgz
tar -zxvf Python-2.7.1.tgz
cd Python-2.7.1
make clean
./configure --prefix=/home/${USER}/.localpython
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How to sort Counter by value? - python
...rom collections import Counter
>>> x = Counter({'a':5, 'b':3, 'c':7})
>>> x.most_common()
[('c', 7), ('a', 5), ('b', 3)]
It'll do so in the most efficient manner possible; if you ask for a Top N instead of all values, a heapq is used instead of a straight sort:
>>> x.mo...
Difference between android-support-v7-appcompat and android-support-v4
...know the difference between android-support-v4.jar
and android-support-v7-appcompat.jar . If I want to add appcompat Action Bar in my application do I need to add both android-support-v7-appcompat.jar and android-support-v4.jar or only android-support-v7-appcompat.jar .
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Printing all global variables/local variables?
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edited Jun 17 '14 at 12:24
Miles Rout
1,06511 gold badge1212 silver badges2525 bronze badges
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Differences in auto-unboxing between Java 6 vs Java 7
...noted a difference in auto unboxing behavior between Java SE 6 and Java SE 7. I'm wondering why that is, because I can't find any documentation of changes in this behavior between these two versions.
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What is the difference between square brackets and parentheses in a regex?
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127
These regexes are equivalent (for matching purposes):
/^(7|8|9)\d{9}$/
/^[789]\d{9}$/
/^[7-9]\...
Crontab Day of the Week syntax
In crontab does the Day of the Week field run from 0 - 6 or 1 -7 ?
3 Answers
3
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Can Java 8 code be compiled to run on Java 7 JVM?
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147
No, using 1.8 features in your source code requires you to target a 1.8 VM. I just tried the new...