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How to get std::vector pointer to the raw data?
...ool*. As the workaround for this, if you do need a sequence of bool, it's best just to use a std::vector<char>. @Motti
– James McNellis
Jun 26 '11 at 23:38
...
How to create a tuple with only one element
...ocs:
A special problem is the construction of tuples containing 0 or 1 items: the syntax has some extra quirks to accommodate these. Empty tuples are constructed by an empty pair of parentheses; a tuple with one item is constructed by following a value with a comma (it is not sufficient to enclo...
How to get value at a specific index of array In JavaScript?
...
Array indexes in JavaScript start at zero for the first item, so try this:
var firstArrayItem = myValues[0]
Of course, if you actually want the second item in the array at index 1, then it's myValues[1].
See Accessing array elements for more info.
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How do I jump out of a foreach loop in C#?
...
Alternatively, if you need to do some other things after you've found the item:
bool found = false;
foreach (string s in sList)
{
if (s.equals("ok"))
{
found = true;
break; // get out of the loop
}
}
// do stuff
return found;
...
Rotating a two-dimensional array in Python
...st a separate argument to zip() (i.e., unpacks the list)
zip() - takes one item from each argument and makes a list (well, a tuple) from those, and repeats until all the sublists are exhausted. This is where the transposition actually happens.
list() converts the output of zip() to a list.
So assum...
Getting distance between two points based on latitude/longitude
...se geopy.distance.distance(…) in code which is an alias of the currently best (=most accurate) distance formula. (Vincenty at the moment.)
– mbirth
Jan 13 '18 at 14:51
12
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What's wrong with overridable method calls in constructors?
... inconsistent and/or incomplete.
A quote from Effective Java 2nd Edition, Item 17: Design and document for inheritance, or else prohibit it:
There are a few more restrictions that a class must obey to allow inheritance. Constructors must not invoke overridable methods, directly or indirectly. I...
How to remove and clear all localStorage data [duplicate]
... than use
localStorage.clear();
And if you want to remove the specific item from local storage than use the following code
localStorage.removeItem(key);
share
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improve this answer
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How to display the default iOS 6 share action sheet with available share options?
...t andImage:(UIImage *)image andUrl:(URL *)url
{
NSMutableArray *sharingItems = [NSMutableArray new];
if (text) {
[sharingItems addObject:text];
}
if (image) {
[sharingItems addObject:image];
}
if (url) {
[sharingItems addObject:url];
}
UIActi...
How do I check how many options there are in a dropdown menu?
...
Use the length property or the size method to find out how many items are in a jQuery collection. Use the descendant selector to select all <option>'s within a <select>.
HTML:
<select id="myDropDown">
<option>1</option>
<option>2</option>
.
.
.
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