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rsync: difference between --size-only and --ignore-times
...mpare the static checksum of source and destination.
These checks are performed before transferring data. Notably, this means the static checksum is distinct from the stream checksum - the later is computed while transferring data.
By default, rsync uses only 1 and 2. Both 1 and 2 can be acquired...
What does the “Just” syntax mean in Haskell?
...ven to be an effective way to do it.
Maybe as a Functor
The idea of transforming one type to another one such that operations on the old type can also be transformed to work on the new type is the concept behind the Haskell type class called Functor, which Maybe a has a useful instance of.
Functo...
Why use Object.prototype.hasOwnProperty.call(myObj, prop) instead of myObj.hasOwnProperty(prop)?
...d therefore won't have hasOwnProperty() available on it. Using your second form would fail to work for this reason.
It's also a safer reference to Object.prototype.hasOwnProperty() (and also shorter).
You can imagine someone may have done...
var someObject = {
hasOwnProperty: function(lol) {
...
How is Math.Pow() implemented in .NET Framework?
...ind-the-scene of calculations:
I've tried some workarounds on a coding platform which has an extensive test coverage cases, and found a very effective way doing it(Solution 3):
public double MyPow(double x, int n) {
double res = 1;
/* Solution 1: iterative : TLE(Time Limit Exceeded)
doub...
What is an undefined reference/unresolved external symbol error and how do I fix it?
...owed by a new-line character is deleted, splicing physical source lines to
form logical source lines. [SNIP]
The source file is decomposed into preprocessing tokens (2.5) and sequences of white-space characters (including comments). [SNIP]
Preprocessing directives are executed, macro invocations are...
How to decide when to use Node.js?
...uage on server and client, and even share some code between them (e.g. for form validation, or to render views at either end.)
The single-threaded event-driven system is fast even when handling lots of requests at once, and also simple, compared to traditional multi-threaded Java or ROR frameworks.
...
Is there ever a time where using a database 1:1 relationship makes sense?
...ave partitioned a larger entity for some reason. Often it is because of performance reasons in the physical schema, but it can happen in the logic side as well if a large chunk of the data is expected to be "unknown" at the same time (in which case you have a 1:0 or 1:1, but no more).
As an example...
Where is Python's sys.path initialized from?
...xchange.using('gps', function() { StackExchange.gps.track('embedded_signup_form.view', { location: 'question_page' }); });
$window.unbind('scroll', onScroll);
}
};
...
MPICH vs OpenMPI
...nology
Open-MPI documents their network support here. MPICH lists this information in the README distributed with each version (e.g. this is for 3.2.1). Note that because both Open-MPI and MPICH support the OFI (aka libfabric) networking layer, they support many of the same networks. However, li...
Why is exception handling bad?
...ach error condition by introducing a return value for it. You will loose information about the error. Thinking that you can keep everything nicely synced by checking each and every statement and doing the cleaning up leads to very convoluted code - catching an error over multiple statements and clea...