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How to send an object from one Android Activity to another using Intents?
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If you're just passing objects around then Parcelable was designed for this. It requires a little more effort to use than using Java's native serialization, but it's way faster (and I mean way, WAY faster).
From the docs, a ...
java get file size efficiently
...per Iteration: 660.0
For runs = 5 and iterations = 50 the picture draws different.
LENGTH sum: 39496, per Iteration: 157.984
CHANNEL sum: 74261, per Iteration: 297.044
URL sum: 95534, per Iteration: 382.136
File must be caching the calls to the filesystem, while channels and URL have some ove...
How to create a CPU spike with a bash command
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You can also do
dd if=/dev/zero of=/dev/null
To run more of those to put load on more cores, try to fork it:
fulload() { dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/nu...
How do I empty an array in JavaScript?
Is there a way to empty an array and if so possibly with .remove() ?
18 Answers
18
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Draw on HTML5 Canvas using a mouse
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x = "white";
break;
}
if (x == "white") y = 14;
else y = 2;
}
function draw() {
ctx.beginPath();
ctx.moveTo(prevX, prevY);
ctx.lineTo(currX, currY);
ctx.strokeStyle = x;
c...
SQL - many-to-many table primary key
...uffer, I'll stand by that comment (technically, it's a generalisation only if I say "all tables", "vast majority" is based on experience). Let's also think about your example, an order is created once (it may be updated occasionally but that's unlikely to change key/index info, more to hit things li...
MySQL Cannot drop index needed in a foreign key constraint
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That's great, but what can I do if my FOREIGN KEY constraint was anonymous?
– Pehat
Jul 8 '16 at 14:48
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How to lose margin/padding in UITextView?
..., you're done.
In general, that should be all you need in most cases.
Even if you are changing the height of the text view on the fly, UITextViewFixed usually does all you need.
(A common example of changing the height on the fly, is changing it as the user types.)
Here is the broken UITextView from...
In C++, what is a virtual base class?
...oo() ??
Virtual inheritance is there to solve this problem. When you specify virtual when inheriting your classes, you're telling the compiler that you only want a single instance.
class A { public: void Foo() {} };
class B : public virtual A {};
class C : public virtual A {};
class D : public B,...
What does int argc, char *argv[] mean?
...argv (argument vector) by convention, but they can be given any valid identifier: int main(int num_args, char** arg_strings) is equally valid.
They can also be omitted entirely, yielding int main(), if you do not intend to process command line arguments.
Try the following program:
#include <io...