5.2.1 Predicates that operate on strings
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Application
Manual
Name
Summary
Help
Documentation
Reference manual
SWI-Prolog extensions
The string type and its double quoted syntax
Predicates that operate on strings
atom_string/2
number_string/2
term_string/2
term_string/3
string_chars/2
string_codes/2
text_to_string/2
string_length/2
string_code/3
get_string_code/3
string_concat/3
split_string/4
sub_string/5
atomics_to_string/2
atomics_to_string/3
string_upper/2
string_lower/2
read_string/3
read_string/5
open_string/2
Packages
Availability:
built-in
string_length
(
+String, -Length
)
Unify
Length
with the number of characters in
String
. This predicate is functionally equivalent to
atom_length/2
and also accepts atoms, integers and floats as its first argument.