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How do you pass arguments to define_method?
... your defined method accepts arguments. When you define a method you're really just nicknaming the block and keeping a reference to it in the class. The parameters come with the block. So:
define_method(:say_hi) { |other| puts "Hi, " + other }
...
What is the difference between Elastic Beanstalk and CloudFormation for a .NET project?
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They're actually pretty different. Elastic Beanstalk is intended to make developers' lives easier. CloudFormation is intended to make systems engineers' lives easier.
Elastic Beanstalk is a PaaS-like layer ontop of AWS's IaaS services ...
Why are ToLookup and GroupBy different?
... I ever bother with GroupBy? Why should it exist?
What happens when you call ToLookup on an object representing a remote database table with a billion rows in it?
The billion rows are sent over the wire, and you build the lookup table locally.
What happens when you call GroupBy on such an object...
Coroutine vs Continuation vs Generator
.... As @zvolkov mentioned, they're functions/objects that can be repeatedly called without returning, but when called will return (yield) a value and then suspend their execution. When they're called again, they will start up from where they last suspended execution and do their thing again.
A genera...
Would it be beneficial to begin using instancetype instead of id?
...stancetype that, as far as I can see, replaces id as a return type in -alloc and init .
4 Answers
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Change the mouse cursor on mouse over to anchor-like style
... $(document).ready() or body onload: (replace myClass with whatever class all of your divs share)
$('.myClass').css('cursor', 'pointer');
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Border length smaller than div width?
I have following code
12 Answers
12
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How do I find which transaction is causing a “Waiting for table metadata lock” state?
...S
We can use INFORMATION_SCHEMA Tables.
Useful Queries
To check about all the locks transactions are waiting for:
USE INFORMATION_SCHEMA;
SELECT * FROM INNODB_LOCK_WAITS;
A list of blocking transactions:
SELECT *
FROM INNODB_LOCKS
WHERE LOCK_TRX_ID IN (SELECT BLOCKING_TRX_ID FROM INNODB_L...
Best way to structure a tkinter application? [closed]
The following is the overall structure of my typical python tkinter program.
7 Answers
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Debugging iframes with Chrome developer tools
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In the Developer Tools in Chrome, there is a bar along the top, called the Execution Context Selector (h/t felipe-sabino), just under the Elements, Network, Sources... tabs, that changes depending on the context of the current tab. When in the Console tab there is a dropdown in that bar t...