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What happens when there's insufficient memory to throw an OutOfMemoryError?
...ems to be right: at least my JVM apparently re-uses OutOfMemoryErrors. To test this, I wrote a simple test program:
class OOMTest {
private static void test (OutOfMemoryError o) {
try {
for (int n = 1; true; n += n) {
int[] foo = new int[n];
}
...
super() raises “TypeError: must be type, not classobj” for new-style class
...ith an old-style class".
However, the important point is that the correct test for "is this a new-style instance (i.e. object)?" is
>>> class OldStyle: pass
>>> instance = OldStyle()
>>> issubclass(instance.__class__, object)
False
and not (as in the question):
>&g...
What is the exact meaning of IFS=$'\n'?
...
ANSI C-quoted strings is a key point. Thanks to @mklement0 .
You can test ANSI C-quoted strings with command od.
echo -n $'\n' | od -c
echo -n '\n' | od -c
echo -n $"\n" | od -c
echo -n "\n" | od -c
Outputs:
0000000 \n
0000001
0000000 \ n
0000002
0000000 \ n
0000002
000...
Prefer composition over inheritance?
.... So the goose is more or less cooked once you derive from TypeA.
My acid test for the above is:
Does TypeB want to expose the complete interface (all public methods no less) of TypeA such that TypeB can be used where TypeA is expected? Indicates Inheritance.
e.g. A Cessna biplane will expos...
How to implement static class member functions in *.cpp file?
...
It is.
test.hpp:
class A {
public:
static int a(int i);
};
test.cpp:
#include <iostream>
#include "test.hpp"
int A::a(int i) {
return i + 2;
}
using namespace std;
int main() {
cout << A::a(4) <<...
Uninstall all installed gems, in OSX?
...a sane list of default gems which for me is: "gem install bundler json minitest rake rdoc"
– Wil Moore III
May 2 '12 at 8:33
5
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What's the point of NSAssert, actually?
... wrong, and so the app quits. Assert can be very useful for debugging/unit testing, and also when you provide frameworks to stop the users from doing "evil" things.
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...
Write to file, but overwrite it if it exists
... @Griddo my shell is bash version 4.3.48(1)-release. echo "aaa" &>| test.txt results in error -bash: syntax error near unexpected token |. My noclobber is set On.
– Tu Bui
May 17 '19 at 17:46
...
Is it better to use std::memcpy() or std::copy() in terms to performance?
...py will have a slight, almost imperceptible performance loss. I just did a test and found that to be untrue: I did notice a performance difference. However, the winner was std::copy.
I wrote a C++ SHA-2 implementation. In my test, I hash 5 strings using all four SHA-2 versions (224, 256, 384, 512),...
Properly close mongoose's connection once you're done
... switched to mongoose.disconnect() everything worked properly and my mocha tests started working properly again
– Brian Noah
May 23 '14 at 22:55
1
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