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How to access outer class from an inner class?
...native to `with_metaclass`
class Outer(with_metaclass(OuterMeta)):
def foo(self):
return "I'm outer class!"
class Inner(object):
outer = None # <-- by default it's None
def bar(self):
return "I'm inner class"
print(Outer.Inner.outer)
>>> &...
How to read a text-file resource into Java unit test? [duplicate]
...:
package com.example;
import org.apache.commons.io.IOUtils;
public class FooTest {
@Test
public void shouldWork() throws Exception {
String xml = IOUtils.toString(
this.getClass().getResourceAsStream("abc.xml"),
"UTF-8"
);
}
}
Works perfectly. File src/test/resources/c...
Count, size, length…too many choices in Ruby?
... Something to consider with this is counter_cache. If have a table, foo, and it has_many bar, you'll have a column in foo named bars_count that gets updated anytime a bar is created / destroyed. Using foo.bars.size is what checks that column (without actually querying any bars). foo.bars.coun...
How to use GROUP BY to concatenate strings in SQL Server?
...ou can write code like this to get the result you asked for:
CREATE TABLE foo
(
id INT,
name CHAR(1),
Value CHAR(1)
);
INSERT INTO dbo.foo
(id, name, Value)
VALUES (1, 'A', '4'),
(1, 'B', '8'),
(2, 'C', '9');
SELECT id,
dbo.GROUP_CONCAT(name + ':' + Value) AS [Column...
Why does Stream not implement Iterable?
...eam::iterator
To pass a Stream to a method that expects Iterable,
void foo(Iterable<X> iterable)
simply
foo(stream::iterator)
however it probably looks funny; it might be better to be a little bit more explicit
foo( (Iterable<X>)stream::iterator );
...
Get protocol, domain, and port from URL
...n't depend on the DOM.
const url = new URL('http://example.com:12345/blog/foo/bar?startIndex=1&pageSize=10');
Method 2 (old way): Use the browser's built-in parser in the DOM
Use this if you need this to work on older browsers as well.
// Create an anchor element (note: no need to append t...
How do I check in JavaScript if a value exists at a certain array index?
...
you can always replace foo !== 'undefined' && foo !== null with just foo != null
– thinklinux
Dec 7 '12 at 16:43
1
...
What is the difference between include and extend in Ruby?
...s they don't clash
It gives Klazz access to Mod's module variables, e.g. @@foo or @@bar
raises ArgumentError if there are cyclic includes
Attaches the module as the caller's immediate ancestor (i.e. It adds Mod to Klazz.ancestors, but Mod is not added to the chain of Klazz.superclass.superclass.supe...
Regex for splitting a string using space when not surrounded by single or double quotes
...t "word"
}
}
Also, capturing single quotes could lead to issues:
"Foo's Bar 'n Grill"
//=>
"Foo"
"s Bar "
"n"
"Grill"
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What to do with “Unexpected indent” in python?
...me string of whitespace. For instance:
>>> def a():
... print "foo"
... print "bar"
IndentationError: unexpected indent
This one is especially common when running python interactively: make sure you don't put any extra spaces before your commands. (Very annoying when copy-and-pasti...