<< echo core evalc >>

eval


Evaluate Nelson code in string.


Syntax


eval(str)
eval(str, catch_str)
[r1, ... rn] = eval(str)
[r1, ... rn] = eval(str, catch_str)

Input argument


str

a string: Nelson instruction to execute

catch_str

a string: Nelson instruction to execute if an error is detected.

Output argument


[r1, ... rn]

results: output variables

Description


eval executes Nelson instructions given in a string.

Please use try catch end block instead than eval, if you need to capture an error message for higher performance.

Examples


eval('B=4')

This example will fail and returns an error message.

C = eval('B=4')

D = eval(4)

This example will not fail and return false.

eval('error(''blabla'')', 'l = lasterror(); disp([''lasterror message: '', l.message])')

See also


execstr, evalc, evalin.

History


Version Description
1.0.0 initial version

Author


Allan CORNET

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