MatLabInstruction

 How to look at information about function handling in MatLab? - functions -- MatLab How to look at information about function handling in MatLab? [Ans] functions [syntax] s=functions(<functionName>) [description] it will return information about function handling of <functionName>.   more details on: Information about function handle - MATLAB functions (mathworks.com)

 How to evaluate a variable with built-in function in MatLab? - feval -- MatLab How to evaluate a variable with built-in function in MatLab?- feval -- MatLab [Ans] feval [description] abbrevaition of function evaluation. more details on: Evaluate function - MATLAB feval (mathworks.com)

 built-in function overriden in MatLab - builtin -- MatLab How to replace built-in function with your own function? [Ans] builtin function Skip syntax and description. They are in the link. more details on: Execute built-in function from overloaded method - MATLAB builtin (mathworks.com)

 loop statement in MatLab -- MatLab loop statement for , end while , end parellel loop statement parfor , end [NOTE] In MatLab, there are no do , while instruction. Use while , end and break instead. for , end syntax for< loopvar>=<initval>:<end>:<M> <statements> end or  for< loopvar>=[<initval>:<end>:<M>] <statements> end other shorthand way, seperated by common  for< loopvar>=[<initval>:<end>:<M>],<statements>,end while , end syntax while <expression> <statements> end other shorthand way, seperated by common  while< expression>,<statements>,end parfor , end syntax parfor <loopvar> = <initval>:<endval>      < statements> end or parfor (<loopvar> = <initval>:<endval>, <M>)      < statements>   end or parfor (<loopVar> = <initVal>:<endVal>,<opts...