commy2

Why you should use "param" more often.

####The basics of "param"

param and the related, but not to be confused with, params command are fairly new additions to the Arma 3 SQF library (- they came with v1.48).
While it feels to me like params is rightfully catching up in usage in the Arma scripting community, replacing ugly and slow _this select N constructions that take up multiple lines and are tiring to look at, param is still largely ignored.

param was introduced during the initiative to replace common BI functions (here: BIS_fnc_param) with native SQF commands, in an effort to increase code performance and readability.
Other notable examples are sort (v1.44), arrayIntersect (v1.48), remoteExec(Call) (v1.50) and the new "conditional select" select CODE (v1.56)

commy2

if (!isServer) exitWith {};

PZG_EnableSound = true;

params ["_logic"];

private _allSounds = [
    ["A3\Sounds_F\environment\ambient\battlefield\battlefield_explosions1.wss", 20],
    ["A3\Sounds_F\environment\ambient\battlefield\battlefield_explosions2.wss", 23],

commy2

/* -------------------------------------------
Macro: NS_NULL

Description:
    Returns a undefined (null) CBA namespace.

Parameters:
    None

Example:

commy2

//init.sqf

My_fnc_addCustomUniform = {
    params [["_unit", objNull, [objNull]], ["_uniform", "", [""]], ["_texture", "", [""]]];

    _unit addUniform _uniform;

    if (_texture != "") then {
        _unit setObjectTextureGlobal [0, _texture];
        (uniformContainer _unit) setVariable ["custom_texture", _texture, true];

commy2

// by commy2
params ["_group", "_position"];

private _index = currentWaypoint _group;

_group enableAttack false;

private _units = units _group;
private _staticWeapons = _position nearObjects ["StaticWeapon", 50] select {_x emptyPositions "gunner" > 0};
private _buildings = (_position nearObjects ["Building", 50]) apply {_x buildingPos -1} select {count _x > 0};

commy2

ID1 = player addEventHandler ["fired", {
    systemChat str 1;
    player removeEventHandler ["fired", ID1];
}];

player addEventHandler ["fired", {
    systemChat str 2;
}];

commy2

private _e = [];
private _c = "true" configClasses (configFile >> "CfgVehicles"); 
 
{ 
    private _ce = "true" configClasses (_x >> "DestructionEffects") apply {toLower getText (_x >> "type")} select {(_x find "\") isEqualTo -1}; 
 
    _e append _ce; 
    _e = _e arrayIntersect _e; 
} forEach _c; 

commy2

_r = configFile >> "CfgWeapons" >> "ItemInfo";

_w = "true" configClasses (configFile >> "CfgWeapons");
_w = _w select {inheritsFrom (_x >> "ItemInfo") == _r} apply {configName _x};

copyToClipBoard str _w;

commy2

CBA_fnc_findLoadableWeapon   = {//

params [["_unit", objNull, [objNull]], ["_magazine", "", [""]]];

_magazine = toLower _magazine;

private _weaponsMagazines = [
    [primaryWeapon _unit, primaryWeaponMagazine _unit],
    [handgunWeapon _unit, handgunMagazine _unit],
    [secondaryWeapon _unit, secondaryWeaponMagazine _unit],

commy2

=====================================================================
== C:\Program Files (x86)\Steam\steamapps\common\Arma 3\arma3.exe
== "C:\Program Files (x86)\Steam\steamapps\common\Arma 3\arma3.exe" "-mod=C:\Program Files (x86)\Steam\steamapps\common\Arma 3\!Workshop\@CBA_A3;C:\Program Files (x86)\Steam\steamapps\common\Arma 3\!Workshop\@ace"

Original output filename: Arma3Retail_DX11
Exe timestamp: 2016/09/21 16:15:19
Current time:  2016/10/03 23:43:12

Type: Public
Build: Stable