classes
head left right tail
is_name len substr
SYNTAX
obj = new StringFunctions()
DESCRIPTION
The StringFunctions class contains functions which you can apply to a strdef. This class
exists purely for the utility of preventing pollution of name space with string operations.
EXAMPLES
objref strobj
strobj = new StringFunctions()
StringFunctions
SYNTAX
length = strobj.len(str)
DESCRIPTION
Return the length of a string.
StringFunctions
SYNTAX
index = strobj.substr(s1, s2)
DESCRIPTION
Return the index into s1 of the first occurrence of s2.
If s2 isn't a substring then the return value is -1.
StringFunctions
SYNTAX
strobj.head(str, "regexp", result)
DESCRIPTION
The result contains the head of the string
up to but not including the regexp. returns index of
last char.
StringFunctions
SYNTAX
strobj.tail(str, "regexp", result)
DESCRIPTION
The result contains the tail of the string
from the char following regexp to the end of the string.
return index of first char.
Other functions can be added as needed,
eg., index(s1, c1), char(s1, i), etc.
without polluting the global name space. In recent versions
functions can return strings.
StringFunctions
SYNTAX
strobj.right(str, n)
DESCRIPTION
Removes first n characters from str and puts the result in
str.
StringFunctions
SYNTAX
.left(str, n)
DESCRIPTION
Removes all but first n characters from str and puts the
result in str
StringFunctions
SYNTAX
.is_name(str)
DESCRIPTION
Returns 1 if the str is the name of a symbol, 0 otherwise.
This is so useful that the same thing is available with the top level
name_declared function.
neuron/general/classes/strfun.hel : 1642 Jul 19