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PHP & mySQL: Year 2038 Bug: What is it? How to solve it?
...g of using TIMESTAMP to store the date+time, but I read that there is a limitation of year 2038 on it. Instead of asking my question in bulk, I preferred to break it up into small parts so that it is easy for novice users to understand as well. So my question(s):
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What is the usefulness of `enable_shared_from_this`?
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It enables you to get a valid shared_ptr instance to this, when all you have is this. Without it, you would have no way of getting a shared_ptr to this, unless you already had one as a member. This example from the boost docu...
What is “assert” in JavaScript?
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There is no assert in JavaScript (yet; there's talk of adding one, but it's at an early stage). Perhaps you're using some library that provides one. The usual meaning is to throw an error if the expression passed into the function is false; this is part of the general concept of assertion checki...
Why use JUnit for testing?
... I can not really understand the circumstances under which I would use junit ?
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How to install PyQt4 on Windows using pip?
I'm using Python 3.4 on Windows. When I run a script, it complains
13 Answers
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What does “opt” mean (as in the “opt” directory)? Is it an abbreviation? [closed]
...as in the "opt" directory)? I commonly see this directory in Unix systems with development tools inside.
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What is the difference between String.slice and String.substring?
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slice() works like substring() with a few different behaviors.
Syntax: string.slice(start, stop);
Syntax: string.substring(start, stop);
What they have in common:
If start equals stop: returns an empty string
If stop is omitted: extracts characters to ...
Deleting Objects in JavaScript
I'm a bit confused with JavaScript's delete operator. Take the following piece of code:
11 Answers
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Why do you need to put #!/bin/bash at the beginning of a script file?
I have made Bash scripts before and they all ran fine without #!/bin/bash at the beginning.
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Centering a view in its superview using Visual Format Language
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Currently, no, it doesn't look like it is possible to center a view in the superview using only VFL. It is, however, not that difficult to do it using a single VFL string and a single extra constraint (per axis):
VFL: "|-(>=20)-[view]-(...