Cobra Forums

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string[] array;
array = new string[] {"A", "B", "C"};


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strarray = ["A","B","C"].toArray


Chuck wrote:

strarray = @['A', 'B', 'C']

# so the general form is:

@[ ... ]

In other words, like a list, but starting with an @. This is a syntax I copied from Powershell.

An array-based syntax became important because there are several methods in the .NET standard library that take an array of some type as opposed to a List<of>. .NET < 2.0 did not have generics.

Using .toArray is okay, but the @[...] is more direct and efficient.

nums = number[](100)

# the very general format is
<var-name> = <type>(<args>)
# and in the case of arrays, the type is an array type (suffixed by "[]")
# and the arg is the length of the array,
# so the array allocation form is:
<var-name> = <type>[](<length>)

# another example
n = 1024
ch = char[](n)
for i in n, ch[i] = c'z'

agustech wrote:Would it be possible to extend String to overload:

String().split()
String.join()

so they can use List<> instead of array?

In case that you think it is a good idea and makes sense, could you give me some tips so I can integrate it in Cobra.Lang?

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      def split(ch as char) as List<of String>
         test
            s = 'a,b,c,d,e,f'
            assert s.split(c',') == ['a', 'b', 'c', 'd', 'e', 'f']
         body
            return List<of String>(.split(@[ch]))


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      def join(j as String, li as IList<of String>) as String is shared
         test
            #li = ['a','b','c','d','e']
            #assert String.join(',',li) == "a,b,c,d,e" # error, can not test it while adding it?
            pass
         body
            str = ""
            if li.count == 0, return str
            #for s in li[:-1] #fails to compile if in library, if standalone program it works ok
            for n in li.count
               if n > (li.count - 2),  break
               str += li[n] + j
            str += li[li.count - 1]
            return str


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   assert String.join(',',['a','b','c','d','e']) == 'a,b,c,d,e' # error compiling