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Test whether a Ruby class is a subclass of another class
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359
Just use the < operator
B < A # => true
A < A # => false
or use the <= op...
Difference between a clickable ImageView and ImageButton
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3 Answers
3
Active
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Creating PHP class instance with a string
...er cool stuff you can do in php are:
Variable variables:
$personCount = 123;
$varname = 'personCount';
echo $$varname; // echo's 123
And variable functions & methods.
$func = 'my_function';
$func('param1'); // calls my_function('param1');
$method = 'doStuff';
$object = new MyClass();
$objec...
What is the minimum length of a valid international phone number?
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3 Answers
3
Active
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How do I comment on the Windows command line?
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answered Jun 8 '10 at 13:20
paxdiablopaxdiablo
737k199199 gold badges14231423 silver badges17931793 bronze badges
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Detecting CTRL+C in Node.js
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edited Nov 10 '17 at 2:23
user6269864
answered Nov 23 '13 at 17:38
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How to save a git commit message from windows cmd?
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303
You are inside vim. To save changes and quit, type:
<esc> :wq <enter>
That mea...
MongoDB/NoSQL: Keeping Document Change History
... author: "joe", // Unversioned field
body: [
{ version: 3, value: "Something cool" }
]
},
{
author: "xxx",
body: [
{ version: 4, value: "Spam" },
{ version: 5, deleted: true }
]
},
{
author: "jim",
body: [
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Remove or adapt border of frame of legend using matplotlib
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answered Aug 28 '14 at 3:31
MattijnMattijn
8,0481111 gold badges3636 silver badges5555 bronze badges
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MySQL Query - Records between Today and Last 30 Days
...want to return all records that were added to the database within the last 30 days. I need to convert the date to mm/dd/yy because of display purposes.
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