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Why shouldn't I use PyPy over CPython if PyPy is 6.3 times faster?
... being "as fast as C" is more about generic C than highly optimized multithreaded cache-aware C libraries used for numerics. For numerics, Python is just used to ferry around pointers to big arrays. So PyPy being "as fast as C" means "your pointers+metadata get moved around as fast as C". Not a big ...
WebView and HTML5
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I answer this topic just in case someone read it and is interested on the result.
It is possible to view a video element (video html5 tag) within a WebView, but I must say I had to deal with it for few days. These are the steps I had to follow so far:
-Find a prope...
How do I modify fields inside the new PostgreSQL JSON datatype?
...to typecast to::jsonb
More info : JSON Functions and Operators
You can read my note here
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Microsecond timing in JavaScript
...cision in JavaScript out of a millisecond timer. Impossible? Nope. Keep reading:
I'm doing some high-precisio experiments that requires self-checked timer accuracies, and found I was able to reliably get 0.1 millisecond precision with certain browsers on certain systems.
I have found that in mo...
Most simple but complete CMake example
...rstand how CMake is meant to be written, it vanishes in the next example I read. All I want to know is, how should I structure my project, so that my CMake requires the least amount of maintainance in the future. For example, I don't want to update my CMakeList.txt when I am adding a new folder in m...
CORS - What is the motivation behind introducing preflight requests?
...primary beneficiary of the preflight mechanism. Yes these services could already be abused by a malicious or non-conforming user agent (and CORS does nothing to change this), but in a world with CORS the preflight mechanism provides an extra 'sanity check' so that clients and servers don't break bec...
How to update Python?
...ogether, it would require some hacking, so I'll save that exercise for the reader. If you don't want to hack, I suggest that if switching bit-versions, remove the other bit-version first.
UPDATES: 2016-05-16
Anaconda and MiniConda can be used with an existing Python installation by disabling the ...
How do you use bcrypt for hashing passwords in PHP?
...y hashing algorithm. You cannot retrieve the plain text password without already knowing the salt, rounds and key (password). [Source]
How to use bcrypt:
Using PHP >= 5.5-DEV
Password hashing functions have now been built directly into PHP >= 5.5. You may now use password_hash() to create a...
#pragma once vs include guards? [duplicate]
...ptimize include guards. My gut says go with whatever system your code is already using. I use BOTH pragma once and guards.
– KitsuneYMG
Jul 17 '09 at 15:32
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How to write a large buffer into a binary file in C++, fast?
...hen you are writing huge chunks there is no need for a buffer when writing/reading (on a blocking device). As such the data should be passed directly to the underlying device (thus by-passing the buffer). Though if you see a difference this would contradict this and make my wonder why the write is a...