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How does LMAX's disruptor pattern work?
...ed to read their paper. I understand there is a ring buffer involved, that it is initialized as an extremely large array to take advantage of cache locality, eliminate allocation of new memory.
...
Show which git tag you are on?
...
Edit: Jakub Narębski has more git-fu. The following much simpler command works perfectly:
git describe --tags
(Or without the --tags if you have checked out an annotated tag. My tag is lightweight, so I need the --tags.)
o...
Is .NET/Mono or Java the better choice for cross-platform development? [closed]
......Java is actually more portable. Mono isn't implemented everywhere, and it lags behind the Microsoft implementation significantly. The Java SDK seems to stay in better sync across platforms (and it works on more platforms).
I'd also say Java has more tool availability across all those platfor...
Does JSON syntax allow duplicate keys in an object?
...
From the standard (p. ii):
It is expected that other standards will refer to this one, strictly adhering to the JSON text format, while
imposing restrictions on various encoding details. Such standards may require specific behaviours. JSON
itself...
Can I call a base class's virtual function if I'm overriding it?
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Is there any possible issues with doing this? Is it bad practice?
– Robben_Ford_Fan_boy
Feb 2 '11 at 15:01
37
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How do you determine what technology a website is built on? [closed]
Quite often I come across a nice looking or functional website, and wonder what technology was used to create it. What techniques are available to figure out what a
particular website was built with?
...
What are deferred objects?
...
deferred.reject()
Reject a Deferred object and call any failCallbacks with the given args.
deferred.rejectWith()
Reject a Deferred object and call any failCallbacks with the given context and args.
deferred.resolve()
Resolve a Deferred object and call any doneCallbacks with the given args....
Using ZXing to create an Android barcode scanning app [duplicate]
...);
intent.putExtra("SCAN_MODE", "QR_CODE_MODE");
startActivityForResult(intent, 0);
}
};
public void onActivityResult(int requestCode, int resultCode, Intent intent) {
if (requestCode == 0) {
if (resultCode == RESULT_OK) {
String contents = intent.getStri...
In what cases do I use malloc and/or new?
...ou should call free and when you use the new operator you should pair with delete and it is a mistake to mix the two (e.g. Calling free() on something that was created with the new operator), but I'm not clear on when I should use malloc / free and when I should use new / delete in m...
Best practice for Python assert
...hanZeroException(Exception):
pass
class variable(object):
def __init__(self, value=0):
self.__x = value
def __set__(self, obj, value):
if value < 0:
raise LessThanZeroException('x is less than zero')
self.__x = value
def __get__(self, obj, ...