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C dynamically growing array
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It's a performance tradeoff. If you double each time, then you sometimes have a 100% overhead and on average 50%. 3/2 gives you 50% worst and 25% typical. It's also close to the effective base of the Fibionacci sequence in the limit (p...
How do I expand a tuple into variadic template function's arguments?
...dit: Added forward around actual function call to support rvalue reference form *this in case you are using clang (or if anybody else actually gets around to adding it).
Edit: Added missing forward around the function object in the non-member apply function's body. Thanks to pheedbaq for pointing ...
How do I merge two dictionaries in a single expression in Python (taking union of dictionaries)?
...ard-compatible code, and you want this in a single expression, the most performant while correct approach is to put it in a function:
def merge_two_dicts(x, y):
"""Given two dictionaries, merge them into a new dict as a shallow copy."""
z = x.copy()
z.update(y)
return z
and then you...
What are the most interesting equivalences arising from the Curry-Howard Isomorphism?
...lies that for every programming concept there exists a precise analogue in formal logic, and vice versa. Here's a "basic" list of such analogies, off the top of my head:
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HTML5 best practices; section/header/aside/article elements
There is enough information about HTML5 on the web (and also on stackoverflow), but now I'm curious about the "best practices". Tags like section/headers/article are new, and everyone has different opinions about when/where you should use these tags. So what do you guys think of the following layout...
Virtual Memory Usage from Java under Linux, too much memory used
... but it's largely meaningless, and usually based on looking at the wrong information. The usual phrasing is something like "Hello World on Java takes 10 megabytes! Why does it need that?" Well, here's a way to make Hello World on a 64-bit JVM claim to take over 4 gigabytes ... at least by one form o...
Why are C# 3.0 object initializer constructor parentheses optional?
...It poses no problems for the sort of "partial program" analysis that is performed by the IDE's "IntelliSense" engine while you are typing. And so on.
the feature hits a common "sweet spot" for the larger object initialization feature; typically if you are using an object initializer it is precisely...
Long-lasting FB access-token for server to pull FB page info
...t infinite. Also the Acces Token Debugger has a link at the bottom of the form to extend a short-lived access token to a long-lived access token.
– SlimIT
Oct 9 '15 at 2:22
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Use of 'prototype' vs. 'this' in JavaScript?
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Really thorough and informative answer. I did some memory tests using the object structures above (A.prototype.hey vs object this.hey) and created 1000 instances of each. The memory footprint for the object property approach was around 100kb large...
Why shouldn't all functions be async by default?
...erations are not high latency, so it doesn't make any sense to take the performance hit that mitigates that latency. Rather, a key few of your operations are high latency, and those operations are causing the zombie infestation of async throughout the code.
if performance is the sole problem, s...