Eval

In some programming languages, eval is a function which evaluates a string as though it were an expression and returns a result; in others, it executes multiple lines of code as though they had been included instead of the line including the eval. The input to eval is not necessarily a string; in languages that support syntactic abstractions (like Lisp), eval's input will consist of abstract syntactic forms.

Read more about Eval:  Security Risks, Uses, Implementation, Theory

Other articles related to "eval":

Examples of Code Injection - Dynamic Evaluation Vulnerabilities - Dynamic Evaluation Vulnerabilities - Eval Injection
... An eval injection vulnerability occurs when an attacker can control all or part of an input string that is fed into an eval function call ... $myvar = 'somevalue' $x = $_GET eval('$myvar = ' ... '') The argument of "eval" will be processed as PHP, so additional commands can be appended ...
JSON - Data Types, Syntax and Example
... wrapped in function blocks) to parse JSON text into an object by invoking JavaScript's eval function ... JavaScript object p as follows var p = eval("(" + contact + ")") The contact variable must be wrapped in parentheses to avoid an ambiguity in ... must parse and accept text that is not strictly JSON-compliant, one should avoid eval ...
No. 502 Squadron RAF - Squadron Bases
... Caithness, Scotland RAF Chivenor, Devon RAF St Eval, Cornwall and RAF Reykjavik, Iceland 12 February 22 ... February 1942 RAF Docking, Norfolk Det ... at RAF St Eval, Cornwall 22 February 2 ... March 1943 RAF St Eval, Cornwall 2 March 25 ... March 1943 RAF Holmesley South, Hampshire Det ... at RAF St Eval, Cornwall 25 March 30 ... June 1943 RAF St Eval, Cornwall 30 June 10 ... December 1943 RAF Holmesley South, Hampshire Det ...
St Eval
... St Eval is a civil parish and hamlet in north Cornwall, England, United Kingdom ... purchase in 1938 to build an RAF Coastal Command Station, RAF St Eval ... St Eval church has been Incorporated into the combined benefice of St Mawgan, St Ervan and St Eval ...
Eval - Theory
... a careful distinction is commonly made between eval and apply ... Eval is understood to be the step of converting a quoted string into a callable function and its arguments, whereas apply is the actual call of the function with a ... Thus, for example, in Scheme, the distinction is between (eval '(f x) ) where the form (f x) is to be evaluated, and (apply f (list x)) where the function f is to be ...