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Is it possible to make a type only movable and not copyable?
...marker field storing a NoCopy value. E.g.
struct Triplet {
one: int,
two: int,
three: int,
_marker: NoCopy
}
You can also do it by having a destructor (via implementing the Drop trait), but using the marker types is preferred if the destructor is doing nothing.
Types n...
`ui-router` $stateParams vs. $state.params
...Params can preserve custom objects, types, etc. while $state.params would "convert custom objects into plain objects".
– Amy.js
Mar 30 '15 at 21:30
2
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How to get the first five character of a String
...
You can use Substring(int startIndex, int length)
string result = str.Substring(0,5);
The substring starts at a specified character position and has a
specified length. This method does not modify the value of the current
instance. Inste...
Android get current Locale, not default
... Locale getCurrentLocale(Context context){
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N){
return context.getResources().getConfiguration().getLocales().get(0);
} else{
//noinspection deprecation
return context.getResources().getConfigura...
Difference Between Select and SelectMany
... To understand resultSelector more The below link helps blogs.interknowlogy.com/2008/10/10/…
– jamir
Jul 16 '19 at 11:52
1
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XMLHttpRequest Origin null is not allowed Access-Control-Allow-Origin for file:/// to file:/// (Serv
...ipken/sql.js/)
I created a file called base64_data.js (and used btoa() to convert the data that I needed and insert it into a <div> so I could copy it).
var base64_data = "U1FMaXRlIGZvcm1hdCAzAAQA ...<snip lots of data> AhEHwA==";
and then included the data in the html like normal ja...
List of zeros in python [duplicate]
... contains only zeros? I want to be able to create a zeros list for each int in range(10)
8 Answers
...
Difference between len() and .__len__()?
...ye, and generally should not be called directly.
It was decided at some point long ago getting the length of something should be a function and not a method code, reasoning that len(a)'s meaning would be clear to beginners but a.len() would not be as clear. When Python started __len__ didn't even e...
Are list-comprehensions and functional functions faster than “for loops”?
...ing tested this myself on the problem of computing distances between all points within a set of points, functional programming (using the starmap function from the built-in itertools module) turned out to be slightly slower than for-loops (taking 1.25 times as long, in fact). Here is the sample code...
How many and which are the uses of “const” in C++?
...hods won't change the logical state of this object.
struct SmartPtr {
int getCopies() const { return mCopiesMade; }
};
Use const for copy-on-write classes, to make the compiler help you to decide when and when not you need to copy.
struct MyString {
char * getData() { /* copy: caller m...