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Questions every good Java/Java EE Developer should be able to answer? [closed]
...tween Set, Map and List?
I'm still amazed how many people don't know this one in a telephone interview.
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answered Jan 22 '10 at 1:09
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Get local IP address in node.js
... an object, that maps network interface names to its properties (so that one interface can, for example, have several addresses):
'use strict';
const { networkInterfaces } = require('os');
const nets = networkInterfaces();
const results = Object.create(null); // or just '{}', an empty object
for ...
How to detect a loop in a linked list?
...to have two references to the list and move them at different speeds. Move one forward by 1 node and the other by 2 nodes.
If the linked list has a loop they
will definitely meet.
Else either of
the two references(or their next)
will become null.
Java function implementing the algorithm:
boole...
Reading binary file and looping over each byte
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To read a file — one byte at a time (ignoring the buffering) — you could use the two-argument iter(callable, sentinel) built-in function:
with open(filename, 'rb') as file:
for byte in iter(lambda: file.read(1), b''):
# Do stu...
When to favor ng-if vs. ng-show/ng-hide?
... those elements will be lost. For example, if you bound a click handler to one of child elements, when ng-if evaluates to false, that element will be removed from DOM and your click handler will not work any more, even after ng-if later evaluates to true and displays the element. You will need to re...
How do you get the current project directory from C# code when creating a custom MSBuild task?
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You can try one of this two methods.
string startupPath = System.IO.Directory.GetCurrentDirectory();
string startupPath = Environment.CurrentDirectory;
Tell me, which one seems to you better
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HTML5 textarea placeholder not appearing
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This one has always been a gotcha for me and many others. In short, the opening and closing tags for the <textarea> element must be on the same line, otherwise a newline character occupies it. The placeholder will therefor...
Android accelerometer accuracy (Inertial navigation)
...s looking into implementing an Inertial Navigation System for an Android phone, which I realise is hard given the accelerometer accuracy, and constant fluctuation of readings.
...
What is the formal difference in Scala between braces and parentheses, and when should they be used?
... expected but integer literal found. The author wanted to write 1 + 2 + 3.
One could argue it’s similar for multi-parameter methods with default arguments; it’s impossible to accidentally forget a comma to separate parameters when using parens.
Verbosity
An important often overlooked note about ...
Cmake vs make sample codes?
...txt ( cmake ) that both do the same thing (the only difference being that one is written in make and the other in cmake ).
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