大约有 33,000 项符合查询结果（耗时：0.0428秒） [XML]
How to generate a random string of a fixed length in Go?
...s another 20% boost.
Masking (and repeating in case of big indices) slows down a little (due to repetition calls): -22%...
But when we make use of all (or most) of the 63 random bits (10 indices from one rand.Int63() call): that speeds up big time: 3 times.
If we settle with a (non-default, new) ...
Split string into an array in Bash
...the risk of blowing up if this assumption were ever violated at some point down the line. Once again, consider my counterexample of 'Los Angeles, United States, North America' (or 'Los Angeles:United States:North America').
Also, word splitting is normally followed by filename expansion (aka pathna...
Static linking vs dynamic linking
... not an optimization issue, because they both involve separate compilation down to object files. However, this is not required: a compiler can in principle, "compile" "static libraries" to a digested AST form initially, and "link" them by adding those ASTs to the ones generated for the main code, th...
Which Architecture patterns are used on Android? [closed]
...–controller works fine, but there are a couple of "issues". It all comes down to how you perceive the Android Activity class. Is it a controller, or is it a view?
The actual Activity class doesn't extend Android's View class, but it does, however, handle displaying a window to the user and also h...
Bold & Non-Bold Text In A Single UILabel?
...ilar results with a bit
// more of code. Interested people please look down the old answer.
// Now I am just being lazy so :p
[_label setText:text];
}
There is a couple of good introductory blog posts here from guys at invasivecode that explain with more examples uses of NSAttributedS...
Should a function have only one return statement?
...there is no true if/else inside. All that this kind of code needs to break down is one "else" forgotten. AFAIK, this code is in real bad need of exceptions.
– paercebal
Sep 17 '08 at 20:48
...
When would you use a WeakHashMap or a WeakReference?
...'ve followed your links from other comments in JavaScript land all the way down here, and still not quite understand why listener registry implementation with WeakMap is a myth. For example, if WebSocket clients should be bound with some listeners on them via registry service, it seems logical to st...
Is there a performance impact when calling ToList()?
..., it has a potential risk that the string[] costs a lot of memory, slowing down everything.
What should be done then
It depends. If you(as well as your business logic) gurantees that the file amount in the folder is always small, the code is acceptable. But it's still suggested to use a lazy versi...
What are the differences between NP, NP-Complete and NP-Hard?
...ou have a correct, efficient way to solve a decision problem, just writing down the steps in the solution is proof enough.
Algorithms research continues, and new clever algorithms are created all the time. A problem you might not know how to solve efficiently today may turn out to have an efficien...
Where can I learn how to write C code to speed up slow R functions? [closed]
... ways to create a numeric vector :
From an existing object that you pass down from R:
SEXP foo( SEXP x_) {
Rcpp::NumericVector x( x_ ) ;
...
}
With given values using the ::create static function:
Rcpp::NumericVector x = Rcpp::NumericVector::create( 1.0, 2.0, 3.0 ) ;
Rcpp::Numeri...