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This help-page, Help:Lua debugging, explains issues of writing Lua script and debugging the source code, to remove errors or improve performance. Because Lua is a "semi-compiled" interpreted language, it does not prescreen for all common syntax errors, nor detect misspelled variables, which are only found at runtime when seeing the " Script ...
ZeroBrane Studio provides local, remote and cross-platform debugging for applications executing Lua code. The debugger supports the following functions: step through the code, set/remove breakpoints, inspect variables and expressions using the Watch window, inspect the call stack with local values and upvalues (local values defined in the outer ...
Lua scripts may load extension modules using require, [20] just like modules written in Lua itself, or with package.loadlib. [22] When a C library is loaded via require ( 'foo' ) Lua will look for the function luaopen_foo and call it, which acts as any C function callable from Lua and generally returns a table filled with methods.
Used as an example in Help:Lua debugging#To see the value of a variable without changing the code local p = {} p. Hello = 'Hello' function p. calc (num) return ...
Tactics for unit-tests: Now, back to unit testing, there is a tactic of self-testing in units, such as a debug-mode switch to run extra testing inside a unit, along with typical "parameter validation" which catches and reports improper data sent into the unit.
Microsoft Script Debugger is relatively minimal debugger for Windows Script Host-supported scripting languages, such as VBScript and JScript. Its user interface allows the user to set breakpoints and/or step through execution of script code line by line, and examine values of variables and properties after any step.
The Lua language has allowed misspelled, or uninitialized, variables to be used in a script which can eventually cause "script error" while giving no other indication of the misspelled name or invalid data.
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