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What is the purpose of the var keyword and when should I use it (or omit it)?
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It's like shooting oneself with a railgun... Forget to put a 'var' before one's variable, and end up modifying a variable somewhere in the scope chain... Try convincing a Java/C/Python/etc. developer that JavaScript is worthwhile. Ha! C/C++ pit...
Singletons vs. Application Context in Android?
...ffects (which may suddenly surface when moving calls to getInstance() from one scope to another). Visibility has been mentioned as another problem, and since singletons imply "global" (= random) access to shared state, subtle bugs may arise when not properly synchronized in concurrent applications.
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How to merge YAML arrays?
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@MinaLuke, inferior in comparison to what? None of the current answers provide a way to merge two items using only yaml... Moreover, there is nothing in the question stating that the OP wishes to use this in CI/CD. Finally, when this is used in CI/CD, logging only depe...
Converting HTML string into DOM elements? [duplicate]
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Why not use insertAdjacentHTML
for example:
// <div id="one">one</div>
var d1 = document.getElementById('one');
d1.insertAdjacentHTML('afterend', '<div id="two">two</div>');
// At this point, the new structure is:
// <div id="one">one</div><d...
Why should I use Deque over Stack?
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For one thing, it's more sensible in terms of inheritance. The fact that Stack extends Vector is really strange, in my view. Early in Java, inheritance was overused IMO - Properties being another example.
For me, the crucial wor...
What are the differences between delegates and events?
... the last line of code, I have overridden the previous behaviors just with one missing + (I have used = instead of +=)
Another weak spot is that every class which uses your Animal class can raise RaiseEvent just calling it animal.RaiseEvent().
To avoid these weak spots you can use events in c#.
Y...
Is Meyers' implementation of the Singleton pattern thread safe?
...destruction. Does the standard prevent the object from being destructed on one thread while (or before) another thread tries to access it at program termination?
– stewbasic
Jul 10 '17 at 0:50
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When to use Tornado, when to use Twisted / Cyclone / GEvent / other [closed]
...erce site, then you should probably go with Django. It will get your work done quick. You dont have to worry about too many technology choices. It provides everything thing you need from template engine to ORM. It will be slightly opinionated about the way you structure your app, which is good If yo...
How can I remove a trailing newline?
...trip() method strips all kinds of trailing whitespace by default, not just one newline as Perl does with chomp.
>>> 'test string \n \r\n\n\r \n\n'.rstrip()
'test string'
To strip only newlines:
>>> 'test string \n \r\n\n\r \n\n'.rstrip('\n')
'test string \n \r\n\n\r '
There a...
What is the C runtime library?
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Yes, libcmt is (one of several) implementations of the C standard library provided with Microsoft's compiler. They provide both "debug" and "release" versions of three basic types of libraries: single-threaded (always statically linked), mul...