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Most efficient way to cast List to List
...java programmers would not think twice before implementing getAllFoos() as allocating a new ArrayList<Foo>, populating it with all the elements from zorkingFoos and returning it. I enjoy entertaining the thought that about 30% of all clock cycles consumed by java code running on millions of m...
Count the number of occurrences of a character in a string in Javascript
...bar".split("o").length-1
//>2
split not recommended. Resource hungry. Allocates new instances of 'Array' for each match. Don't try that for a >100MB file via FileReader. You can actually easily observe the EXACT resource usage using Chrome's profiler option.
3.
var stringsearch = "o"
,str...
Convert file path to a file URI?
...e URL even if the buffer is smaller, so I first obtain the length and then allocate the buffer.
Some very interesting observation I had is that while "\\device\path" is correctly transformed to "file://device/path", specifically "\\localhost\path" is transformed to just "file:///path".
The WinApi ...
Node.js throws “btoa is not defined” error
... is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
– Rodrigo De Almeida Siqueira
Jun 13 '19 at 13:14
...
How to dismiss keyboard for UITextView with return key?
...ad{
....
UITapGestureRecognizer *tapRec = [[UITapGestureRecognizer alloc]
initWithTarget:self action:@selector(tap:)];
[self.view addGestureRecognizer: tapRec];
....
}
-(void)tap:(UITapGestureRecognizer *)tapRec{
[[self view] endEditing: YES];
}
When the user taps out...
C++ display stack trace on exception
...)-ed
char** symbollist = backtrace_symbols(addrlist, addrlen);
// allocate string which will be filled with the demangled function name
size_t funcnamesize = 256;
char* funcname = (char*)malloc(funcnamesize);
// iterate over the returned symbol lines. skip the first, it is the
...
Java: Detect duplicates in ArrayList?
... Would it be more efficient to tell the HashSet how much space to allocate: Set<T> set = new HashSet<T>(list.size());? Given a List parameter I think it is more efficient if it is common for the list to not contain duplicates.
– Paul Jackson
...
Can we have functions inside functions in C++?
... Note that the class instantiation approach comes with a memory allocation and is therefore dominated by the static approach.
– ManuelSchneid3r
May 18 '18 at 19:34
...
How can I randomize the lines in a file using standard tools on Red Hat Linux?
...to process (much, much longer than with shuf), no matter how much memory I allocated.
– mklement0
May 8 '15 at 23:00
1
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Android: Scale a Drawable or background image?
...want to scale the background image (keeping its aspect ratio) to the space allocated when the page gets created. Does anyone have an idea how to do this?
...