* Add exists() function that checks existence of key
Adds an exists() function that checks whether a given key exists in the
data. If only one argument is provided to exists(), the global data is
queried for the item. If two arguments are given, the first argument
specifies the object to query for the key given as second argument.
Also adds corresponding unit tests and updates README for
documentation.
* Split exists() into exists() and existsIn()
Splits the exists() function, which previously took both one or two
arguments, into an exists() function accepting one and an existsIn()
function accepting two arguments.
* Fixed passing callback arguments as reference
* Another passing as const reference instead of new instance
* Implemented variable number of parameters
- extended function "function_regex" to pass minimum and maximum parameters. if minimum=maximum, all params are required, if minimum = 0, all params are optional.....
- for single parameter there is different regex (created by the same function_regex function) to allo read sort([1,2,3]) as one parameter
- extended Match to test if group is valid, so only valid params are filled to params vector
- new function arguments_count to test number of arguments passed to callback
* unit tests for updated callbacks with variable number of params
* merge with last version
* Optimized passing arguments as const reference
* Fixed warning on 64-bit windows (conversion from 'size_t' to 'int', possible loss of data)
* Fixed passing callback arguments as reference
* Another passing as const reference instead of new instance
* Implemented variable number of parameters
- extended function "function_regex" to pass minimum and maximum parameters. if minimum=maximum, all params are required, if minimum = 0, all params are optional.....
- for single parameter there is different regex (created by the same function_regex function) to allo read sort([1,2,3]) as one parameter
- extended Match to test if group is valid, so only valid params are filled to params vector
- new function arguments_count to test number of arguments passed to callback
* unit tests for updated callbacks with variable number of params
* merge with last version
* Optimized passing arguments as const reference