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Pro JavaScript programmer interview questions (with answers) [closed]
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Because JavaScript is such a small language, yet with incredible complexity, you should be able to ask relatively basic questions and find out if they are really that good based on their answers. For instance, my standard first question to gauge the rest of the interview is:
In JavaScript, ...
How to open emacs inside bash
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Just type emacs -nw. This won't open an X window.
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TypeScript Objects as Dictionary types as in C#
I have some JavaScript code that uses objects as dictionaries; for example a 'person' object will hold a some personal details keyed off the email address.
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Accessing inactive union member and undefined behavior?
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The confusion is that C explicitly permits type-punning through a union, whereas C++ (c++11) has no such permission.
c11
6.5.2.3 Structure and union members
95) If the member used to read the contents of a union object is not the same a...
Why doesn't 'ref' and 'out' support polymorphism?
...something from n.
That permits this sequence of events:
Declare a field x of type Animal.
Pass x as an out parameter to N.
N writes a Tiger into n, which is an alias for x.
On another thread, someone writes a Turtle into x.
N attempts to read the contents of n, and discovers a Turtle in what i...
Setting the default Java character encoding
How do I properly set the default character encoding used by the JVM (1.5.x) programmatically?
17 Answers
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Why doesn't the example compile, aka how does (co-, contra-, and in-) variance work?
Following on from this question , can someone explain the following in Scala:
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NodeJS / Express: what is “app.use”?
In the docs for the NodeJS express module , the example code has app.use(...) .
23 Answers
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What is the best way to convert seconds into (Hour:Minutes:Seconds:Milliseconds) time?
...utput
string str = time .ToString(@"hh\:mm\:ss\:fff");
(From Nick Molyneux) Ensure that seconds is less than TimeSpan.MaxValue.TotalSeconds to avoid an exception.
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Python: try statement in a single line
Is there a way in python to turn a try/except into a single line?
12 Answers
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