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Can Protractor and Karma be used together?
If Protractor is replacing Angular Scenario Runner for E2E testing, does that mean I will still be able to use it with Karma as my E2E testing framework ?
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count(*) vs count(column-name) - which is more correct? [duplicate]
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COUNT(*) counts all rows
COUNT(column) counts non-NULLs only
COUNT(1) is the same as COUNT(*) because 1 is a non-null expressions
Your use of COUNT(*) or COUNT(column) should be based on the desired output only.
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edited Sep 20 '16 at 18:35
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Define a lambda expression that raises an Exception
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There is more than one way to skin a Python:
y = lambda: (_ for _ in ()).throw(Exception('foobar'))
Lambdas accept statements. Since raise ex is a statement, you could write a general purpose raiser:
def raise_(ex):
raise...
When should the volatile keyword be used in C#?
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I don't think there's a better person to answer this than Eric Lippert (emphasis in the original):
In C#, "volatile" means not only "make sure that the compiler and the
jitter do not perform any code reordering or register caching
optimizations on this variable". It...
What does “use strict” do in JavaScript, and what is the reasoning behind it?
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This article about Javascript Strict Mode might interest you: John Resig - ECMAScript 5 Strict Mode, JSON, and More
To quote some interesting parts:
Strict Mode is a new feature in ECMAScript 5 that allows you to place a p...
I want to get the type of a variable at runtime
I want to get the type of a variable at runtime.
How do I do this?
4 Answers
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Best architectural approaches for building iOS networking applications (REST clients)
I'm an iOS developer with some experience and this question is really interesting to me. I saw a lot of different resources and materials on this topic, but nevertheless I'm still confused. What is the best architecture for an iOS networked application? I mean basic abstract framework, patterns, whi...
What is the fastest way to get the value of π?
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The Monte Carlo method, as mentioned, applies some great concepts but it is, clearly, not the fastest, not by a long shot, not by any reasonable measure. Also, it all depends on what kind of accuracy you are looking for. The fastest π I know of is the one with the digits hard coded. Looking at Pi...
How do I find out which DOM element has the focus?
...cus. I've been looking through the DOM and haven't found what I need, yet. Is there a way to do this, and how?
16 Answers
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