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What is a mixin, and why are they useful?
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@hillel good point, but keep in mind that Python will call superclasses' methods from left to right (when you need to override the constructor, for example).
– Eliseu Monar dos Santos
Jun 16 '15 at 8:23
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Random float number generation
...n will often not be sufficient if you need truly random numbers.
Before calling rand(), you must first "seed" the random number generator by calling srand(). This should be done once during your program's run -- not once every time you call rand(). This is often done like this:
srand (static_c...
JavaScript console.log causes error: “Synchronous XMLHttpRequest on the main thread is deprecated…”
...you return HTML content like that via xhr, you will cause jQuery to make a call to get that script. That call happens with an async flag false since it assumes you need the script to continue loading.
In situations like this one you'd be better served by looking into a binding framework of some ki...
How to flip windows in vim? [duplicate]
If I have 2 horizontally split windows, how to rotate them to get 2 vertically split windows?
4 Answers
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Function passed as template argument
...t;< "Result is " << temp << std::endl;
}
which can now be called as either:
doOperation(add2);
doOperation(add3());
See it live
The problem with this is that if it makes it tricky for the compiler to inline the call to add2, since all the compiler knows is that a function pointe...
How do I store data in local storage using Angularjs?
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@Anton mozilla has solid documentation: developer.mozilla.org/en-US/docs/Web/HTML developer.mozilla.org/en-US/docs/Web/CSS/CSS3 developer.mozilla.org/en-US/docs/Web/JavaScript
– Guillaume Massé
Apr 3 '14 at ...
How can I use console logging in Internet Explorer?
...t(false, 'YOU FAIL');
</script>
Also, you can clear the Console by calling console.clear().
NOTE: It appears you must launch the Developer Tools first then refresh your page for this to work.
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Center Align on a Absolutely Positioned Div
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Your problem may be solved if you give your div a fixed width, as follows:
div#thing {
position: absolute;
top: 0px;
z-index: 2;
width:400px;
margin-left:-200px;
left:50%;
}
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Writing files in Node.js
...ree ways to write a file:
fs.write(fd, buffer, offset, length, position, callback)
You need to wait for the callback to ensure that the buffer is written to disk. It's not buffered.
fs.writeFile(filename, data, [encoding], callback)
All data must be stored at the same time; you cannot perform se...
Postgres and Indexes on Foreign Keys and Primary Keys
...ndexes on primary keys and unique constraints, but not on the referencing side of foreign key relationships.
When Pg creates an implicit index it will emit a NOTICE-level message that you can see in psql and/or the system logs, so you can see when it happens. Automatically created indexes are visi...