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What is polymorphism, what is it for, and how is it used?
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Polyp is short for polypo(u)s. And pous is foot in greek. ;-)
– Dirk
Oct 12 '16 at 14:21
2
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Catching an exception while using a Python 'with' statement
...s from the open call vs the working code you could do:
try:
f = open('foo.txt')
except IOError:
print('error')
else:
with f:
print f.readlines()
share
|
improve this answer
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Asserting successive calls to a mock method
.... Each function call receives a tuple of (args, kwargs), so to check that "foo(123)" was called correctly, you need to "assert mock.call_args == ((123,), {})", which is a mouthful compared to "call(123)"
– Jonathan Hartley
Jan 25 '16 at 20:52
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What are the differences between Autotools, Cmake and Scons?
...ts out, it gets busted all to hell with an improperly framed CFLAGS = "<foo>" in the makefile. Quite simply this is another one of those "old saw" items. And the CMake examples are bogus...again... You can do the first if you're not specifying RELEASE or DEBUG. FAIL.
–...
OO Design in Rails: Where to put stuff
...urable
...
end
class Model
include Indexable
end
# controllers/foo_controller.rb
class FooController < ApplicationController
include Indexable
end
# controllers/bar_controller.rb
class BarController < ApplicationController
include Indexable
end
/lib is my preferred choice fo...
Would it be beneficial to begin using instancetype instead of id?
...n and explain why it's a good idea.
First, some definitions:
@interface Foo:NSObject
- (id)initWithBar:(NSInteger)bar; // initializer
+ (id)fooWithBar:(NSInteger)bar; // class factory
@end
For a class factory, you should always use instancetype. The compiler does not automatically convert i...
What is the difference between quiet NaN and signaling NaN?
I have read about floating-point and I understand that NaN could result from operations. But I can't understand what these are concepts exactly. What is the difference between them?
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Difference between Mock / Stub / Spy in Spock test framework
...")
and: "check behaviour exactly 3 times"
mockSubscriber.receive("foo") == "hey"
mockSubscriber.receive("bar") == "ho"
mockSubscriber.receive("zot") == "ho"
}
def "Spies can have interactions"() {
given:
def spySubscriber = Spy(MySubscriber)
publisher.addSubscriber(...
Are PDO prepared statements sufficient to prevent SQL injection?
...nguage), i.e. this does not work:
$stmt = $dbh->prepare('SELECT * FROM foo ORDER BY :userSuppliedData');
The reason why the above does not work is because DESC and ASC are not data. PDO can only escape for data. Secondly, you can't even put ' quotes around it. The only way to allow user chosen...
How do you parse and process HTML/XML in PHP?
...1)->class = 'bar';
$html->find('div[id=hello]', 0)->innertext = 'foo';
echo $html;
Extract content from HTML:
// Dump contents (without tags) from HTML
echo file_get_html('http://www.google.com/')->plaintext;
Scraping Slashdot:
// Create DOM from URL
$html = file_get_html('ht...