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Polymorphic copy: Difference between revisions
→{{header|REXX}}: added the REXX computer programming language.
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=={{header|REXX}}==
In the REXX language, every variable is a string (whether or not they contain characters or numerals).
<br>However, a variables' type can be determined from it's attributes (datatypes)
<lang rexx>/*REXX program to copy (polymorphically) one variable's value into another variable. */
b= 'old value.'
a= 123.45
b= a /*copy a variable's value into another.*/
if a==b then say "copy did work."
else say "copy didn't work." /*didn't work, maybe ran out of storage*/
/*stick a fork in it, we're all done. */</lang>
Programming note: Most REXXes will raise a syntax error if an assignment (copy) fails, but it's not guaranteed to do so.<br><br>
=={{header|Ruby}}==
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