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How to make a valid Windows filename from an arbitrary string?
I've got a string like "Foo: Bar" that I want to use as a filename, but on Windows the ":" char isn't allowed in a filename.
...
Why #egg=foo when pip-installing from git repo
...-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f11835396%2fwhy-egg-foo-when-pip-installing-from-git-repo%23new-answer', 'question_page');
}
);
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How to enter a multi-line command
...inally, strings (in all varieties) may also extend beyond a single line:
'Foo
bar'
They include the line breaks within the string, then.
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Why use Object.prototype.hasOwnProperty.call(myObj, prop) instead of myObj.hasOwnProperty(prop)?
...est for properties generally, e.g.
var o = document.getElementsByTagName('foo');
// false in most browsers, throws an error in IE 6, and probably 7 and 8
o.hasOwnProperty('bar');
// false in all browsers
('bar' in o);
// false (in all browsers? Do some throw errors?)
Object.prototype.hasOwnPrope...
Python function global variables?
...nc_B calls func_A. In this example, order does matter:
def a():
global foo
foo = 'A'
def b():
global foo
foo = 'B'
b()
a()
print foo
# prints 'A' because a() was the last function to modify 'foo'.
Note that global is only required to modify global objects. You can still access them fr...
Adding a background image to a element
...
<div class="foo">Foo Bar</div>
and in your CSS file:
.foo {
background-image: url("images/foo.png");
}
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Is there any way to use a numeric type as an object key?
... a number, is typecasted into a string via the toString method.
> var foo = {}
undefined
> foo[23213] = 'swag'
'swag'
> foo
{ '23213': 'swag' }
> typeof(Object.keys(foo)[0])
'string'
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JUnit test for System.out.println()
... output via SLF4J, commons-testing's JUnit @Rule might help:
public class FooTest {
@Rule
public final ExpectedLogs logs = new ExpectedLogs() {{
captureFor(Foo.class, LogLevel.WARN);
}};
@Test
public void barShouldLogWarning() {
assertThat(logs.isEmpty(), is(tru...
Running Bash commands in Python
...le as your standard input, and write your standard output to a file. grep 'foo' <inputfile >outputfile opens outputfile for writing and inputfile for reading, and passes its contents as standard input to grep, whose standard output then lands in outputfile. This is not generally hard to replac...
what is the right way to treat Python argparse.Namespace() as a dictionary?
...import argparse
>>> args = argparse.Namespace()
>>> args.foo = 1
>>> args.bar = [1,2,3]
>>> d = vars(args)
>>> d
{'foo': 1, 'bar': [1, 2, 3]}
You can modify the dictionary directly if you wish:
>>> d['baz'] = 'store me'
>>> args.baz
'...