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Why isn't vector a STL container?
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Does this apply for C++11 std::array<bool> ?
– Sergio Basurco
Dec 4 '15 at 8:06
4
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Store images in a MongoDB database
... store images in a MongoDB database rather than just text? Can I create an array of images in a MongoDB database? Will it be possible to do the same for videos?
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Passing parameters to a Bash function
...declare gives you more options and limits variable scope
Want to pass an array to a function?
callingSomeFunction "${someArray[@]}" # Expands to all array elements.
Inside the function, handle the arguments like this.
function callingSomeFunction ()
{
for value in "$@" # You want to use "$...
mongodb count num of distinct values per field/key
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MongoDB has a distinct command which returns an array of distinct values for a field; you can check the length of the array for a count.
There is a shell db.collection.distinct() helper as well:
> db.countries.distinct('country');
[ "Spain", "England", "France", "Aust...
Iterator Loop vs index loop [duplicate]
... 2).
Disadvantages: only for sequential random access containers (vector, array, deque), doesn't work for list, forward_list or the associative containers. Also the loop control is a little verbose (init, check, increment). People need to be aware of the 0-based indexing in C++.
2) iterator-based ...
Using comma as list separator with AngularJS
... .join because it allows the elements in the list to each be members of an array, like: <b ng-repeat="friend in friends">{{friend.email}}{{{true: '', false: ', '}[$last]}}</b>
– Ryan Marcus
May 25 '13 at 20:25
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How to check if a table exists in a given schema
...lname_exists(anyThing), relname_normalized(anyThing) and relnamechecked_to_array(anyThing). All checks from pg_catalog.pg_class table, and returns standard universal datatypes (boolean, text or text[]).
/**
* From my old SwissKnife Lib to your SwissKnife. License CC0.
* Check and normalize to arr...
How to remove extension from string (only real extension!)
... Looking at the commits on php.net there is an idea about working with an array...which I think could be improved using something such as array-walk
– CrandellWS
Feb 3 '15 at 16:10
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How to convert a std::string to const char* or char*?
... automatically. There are two immediate ways to solve this.
boost::scoped_array
boost::scoped_array will delete the memory for you upon going out of scope:
std::string str;
boost::scoped_array<char> writable(new char[str.size() + 1]);
std::copy(str.begin(), str.end(), writable.get());
writa...
ng-options with simple array init
...I prefer this method over ng-options anyway, as ng-options only works with arrays. ng-repeat also works with json-like objects.
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