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Can't start Eclipse - Java was started but returned exit code=13
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There are working combinations of OS, JDK and Eclipse bitness. In my case, I was using a 64-bit JDK with a 32-bit Eclipse on a 64-bit OS. After downgrading the JDK to 32-bit, Eclipse started working.
Use one of the following combinations.
32-bit OS, 32-bit...
How to set JAVA_HOME environment variable on Mac OS X 10.9?
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When you say "shell," do you mean I close the terminal window and reopen it? Also, does this permanently add the environment variable for my jdk?
– islander_zero
Apr 3 '14 at 15:57
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How can I see the current value of my $PATH variable on OS X?
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for MacOS, make sure you know where the GO install
export GOPATH=/usr/local/go
PATH=$PATH:$GOPATH/bin
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improve this answe...
Why does sys.exit() not exit when called inside a thread in Python?
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from the thread?
Apart from the method Deestan described you can call os._exit (notice the underscore). Before using it make sure that you understand that it does no cleanups (like calling __del__ or similar).
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What does Expression.Quote() do that Expression.Constant() can’t already do?
...) ex1.Compile();
var f1b = f1a(100);
Console.WriteLine(f1b(123));
The lambda has a nested lambda; the compiler generates the interior lambda as a delegate to a function closed over the state of the function generated for the outer lambda. We need consider this case no more.
Suppos...
printf with std::string?
...r example:
std::locale loc("");
std::cout.imbue(loc);
std::cout << 123456.78;
The nameless locale (the "") picks a locale based on the user's configuration. Therefore, on my machine (configured for US English) this prints out as 123,456.78. For somebody who has their computer configured fo...
How do malloc() and free() work?
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OK some answers about malloc were already posted.
The more interesting part is how free works (and in this direction, malloc too can be understood better).
In many malloc/free implementations, free does normally not return the memory to the operating system (or at l...
Listening for variable changes in JavaScript
...c.innerHTML = c.innerHTML + '<br />' + t;
}
// Demo
var myVar = 123;
Object.defineProperty(this, 'varWatch', {
get: function () { return myVar; },
set: function (v) {
myVar = v;
print('Value changed! New value: ' + v);
}
});
print(varWatch);
varWatch = 456;
pri...
Round to at most 2 decimal places (only if necessary)
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If the value is a text type:
parseFloat("123.456").toFixed(2);
If the value is a number:
var numb = 123.23454;
numb = numb.toFixed(2);
There is a downside that values like 1.5 will give "1.50" as the output. A fix suggested by @minitech:
var numb = 1.5;
numb = +nu...
How to import other Python files?
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There are many ways to import a python file, all with their pros and cons.
Don't just hastily pick the first import strategy that works for you or else you'll have to rewrite the codebase later on when you find it doesn't meet your needs.
I'll start out explaining the easiest exampl...