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What is a NullPointerException, and how do I fix it?
... doSomething() could be written as:
/**
* @param obj An optional foo for ____. May be null, in which case
* the result will be ____.
*/
public void doSomething(SomeObject obj) {
if(obj == null) {
//do something
} else {
//do something else
}
}
Finally, How to pinpo...
Git cherry pick vs rebase
... /
D---E---F---G master
Cherry-pick:
$ git checkout master -b topic_new
$ git cherry-pick A^..C
You get:
A---B---C topic
/
D---E---F---G master
\
A'--B'--C' topic_new
for more info about git this book has most of it (http://git-scm.com/book)
...
Difference between assertEquals and assertSame in phpunit?
...ly about an interpreted value, be it by type juggling or an object with an __magic presentation method (__toString() for example).
A good use case for assertSame() is testing a singleton factory.
class CacheFactoryTest extends TestCase
{
public function testThatCacheFactoryReturnsSingletons()
...
How can I use Guzzle to send a POST request in JSON?
... edited Aug 18 at 7:06
Valor_
2,49255 gold badges3939 silver badges8787 bronze badges
answered Mar 7 '14 at 8:56
...
Putting git hooks into repository
...sh
if [ -x $0.local ]; then
$0.local "$@" || exit $?
fi
if [ -x tracked_hooks/$(basename $0) ]; then
tracked_hooks/$(basename $0) "$@" || exit $?
fi
The installation script would move all pre-existing hooks to the side (append .local to their names), and symlink all known hook names to the...
Backwards migration with Django South
...r app should have a migrations directory, with files in it named like
0000_initial.py
0001_added_some_fields.py
0002_added_some_more_fields.py
0003_deleted_some_stuff.py
Normally, when you run ./manage.py migrate your_app, South runs all new migrations, in order. (It looks at the database tables ...
Mixin vs inheritance
...dited Jun 21 at 11:36
underscore_d
4,91633 gold badges2828 silver badges5454 bronze badges
answered May 13 '09 at 20:42
...
How can I return two values from a function in Python?
... you can return a tuple or a list and unpack it after the call:
def select_choice():
...
return i, card # or [i, card]
my_i, my_card = select_choice()
On line return i, card i, card means creating a tuple. You can also use parenthesis like return (i, card), but tuples are created by com...
C++应用程序添加VBScript和JavaScript支持 - C/C++ - 清泛网移动版 - 专注C/C++及内核技术
...Data);
VARIANT GetAsVariant();
protected:
LPSAFEARRAY m_pSA;
private:
};
It provides the exact same features that you will want to use with SAFEARRAY object but its usage may be simpler for some of us (like me!). The function GetAsVariant may be useful in case when you...
Find the most common element in a list
...ponents. Consider for example:
import itertools
import operator
def most_common(L):
# get an iterable of (item, iterable) pairs
SL = sorted((x, i) for i, x in enumerate(L))
# print 'SL:', SL
groups = itertools.groupby(SL, key=operator.itemgetter(0))
# auxiliary function to get "quality"...