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How to check if a Ruby object is a Boolean
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Simplest way I can think of:
# checking whether foo is a boolean
!!foo == foo
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Why are mutable structs “evil”?
...o lose changes quite easily... for example, getting things out of a list:
Foo foo = list[0];
foo.Name = "abc";
what did that change? Nothing useful...
The same with properties:
myObj.SomeProperty.Size = 22; // the compiler spots this one
forcing you to do:
Bar bar = myObj.SomeProperty;
bar.S...
jQuery access input hidden value
...t like you can do on any other input element:
<input type="hidden" id="foo" name="zyx" value="bar" />
alert($('input#foo').val());
alert($('input[name=zyx]').val());
alert($('input[type=hidden]').val());
alert($(':hidden#foo').val());
alert($('input:hidden[name=zyx]').val());
Those all mea...
Is there a benefit to defining a class inside another class in Python?
...r class. For example to use a metaclass, it's sometimes handy to do
class Foo(object):
class __metaclass__(type):
....
instead of defining a metaclass separately, if you're only using it once.
The only other time I've used nested classes like that, I used the outer class only as a n...
How do I copy a folder from remote to local using scp? [closed]
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scp -r user@your.server.example.com:/path/to/foo /home/user/Desktop/
By not including the trailing '/' at the end of foo, you will move the directory itself (including contents), rather than only the contents of the directory.
From man scp (See online manual)
-r ...
How do I set a variable to the output of a command in Bash?
...rs which could be interpreted as part of the variable name. e.g. ${OUTPUT}foo. They are also required when performing inline string operations on the variable, such as ${OUTPUT/foo/bar}
– rich remer
Jun 1 '16 at 23:16
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What's the difference between CSS classes .foo.bar (without space) and .foo .bar (with space) [dupli
Would you please explain me the difference between these two CSS classes syntax:
5 Answers
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Using Jasmine to spy on a function without an object
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In the test file, convert the import of the function from this:
import {foo} from '../foo_functions';
x = foo(y);
To this:
import * as FooFunctions from '../foo_functions';
x = FooFunctions.foo(y);
Then you can spy on FooFunctions.foo :)
spyOn(FooFunctions, 'foo').and.callFake(...);
// .....
GoogleTest: How to skip a test?
... its name. This will exclude it from execution."
Examples:
// Tests that Foo does Abc.
TEST(FooTest, DISABLED_DoesAbc) { ... }
class DISABLED_BarTest : public ::testing::Test { ... };
// Tests that Bar does Xyz.
TEST_F(DISABLED_BarTest, DoesXyz) { ... }
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How to get a substring between two strings in PHP?
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If the strings are different (ie: [foo] & [/foo]), take a look at this post from Justin Cook.
I copy his code below:
function get_string_between($string, $start, $end){
$string = ' ' . $string;
$ini = strpos($string, $start);
if ($ini == 0) re...