Meme Script

● Type System

● If, while etc

● Dates, times, strings

Meme Script Example

var x = 10;

var y = 20;

var z : Integer;

z = x + y;

notify(z);

Meme IDE Function Editor

Primitive Types

● Integer 10, -234

● Decimal 1.23

● String “ABC”

● Boolean true, false

Declaring Integer Variables

● Local variables within functions

var x : Integer;

var x2 = 1;

Declaring Decimal Variables

var d : Decimal(2);

var d2 = 1.23;

Declaring Boolean Variables

var b : Boolean;

var b2 = true;

Declaring Strings

var s : String;

var s = “abc”;

Default Initializations

● String - empty string “”

● Integer and Decimal – 0

● Boolean – false

Pre-defined Complex Types

● Date – day, month, year

● Time – hour, minute, second

● Duration – hour, minute, second

● Timestamp

IF

var a = 15;

if (a > 10)

{

notify(“A is big”);

}

IF / ELSE

var a = 15;

if (a > 10)

{

notify(“A is big”);

}

else

{

notify(“A is small”);

}

IF / ELSIF / ELSE notify(“A is small”);

}

notify(“A is big”);

}

elsif (a > 5)

{

notify(“A is medium sized”);

}

else

{

notify(“A is small”);

}

WHILE

var x = 0;

while (x < 10)

{

x++;

// do other things

}

FOR

var names : String[];

append(names, "Jack");

append(names, "Jill");

append(names, "Jane");

for (name in names)

{

notify(name);

}

Arithmetic

var c = 20;

f = c * (9.0 / 5.0) + 32;

notify(f);

Logical Operators

var x = 10;

if ((x > 10) and not (x > 20))

{

notify(“x is middle sized”);

}

Dataspace

Defining a 'Person' Record

Adding Attributes to the 'Person' Record

Naming Conventions

Record Type Names● bumpy case with initial uppercase, ● - E.g. Person or EmployeeDetails

Attribute names in records● - bumpy case with initial lowercase● - E.g. name or firstName

Defining an Address Record

Adding List of Addresses to Person

Creating a Person Record

var p : Person;

var a : Address;

a.line1 = "12 Hight St";

a.zip = "PA 12345";

p.name = "Simon";

p.tel = "1234567";

append(p.addresses, a);

'Dot' Notation

notify(p.addresses[0].line1);

p.addresses[0].line1 = "13 High St"

String Concatenation

var s1 = "The Start"

var s2 = "The Middle"

var s3 = "The End"

var result = s1 + ", " + s2 + ", " + s3 + ". " + 3 + " parts.";

The Start, The Middle, The End. 3 parts.

String Comparison

var s1 = "String 1";

var s2 = "String ONE";

if (s1 == s2)

{

notify("Yes");

}

String Utilities

● Boolean startsWith(sourceString, matchString)

● Boolean endsWith(sourceString, matchString)

● String subString(sourceString, startPos, length)

● Integer size(sourceString)

● String toLower(sourceString)

● String toUpper(sourceString)

● String trim(sourceString)

● String replaceAll(sourceString, matchString, replacementString)

● String replaceFirst(sourceString, matchString, replacementString)

● String replaceLast(sourceString, matchString, replacementString)

Collections

var people : Person[];

var names : String[];

append(names, "Fred");

append(names, "Jane");

INSERT

var people : Person[];

var names : String[];

append(names, "Fred");

append(names, "Jane");

insert(names, "Joe", 0);

Collections and []

var people : Person[];

var fred : Person[];

fred.name = "Fred";

fred.tel = "12345";

people.append(fred);

var jane : Person[];

jane.name = "Fred";

jane.tel = "12345";

people.append(jane);

people.remove(fred);

Removing from a Collection

var people : Person[];

var fred : Person[];

fred.name = "Fred";

fred.tel = "12345";

people.append(fred);

remove(people, fred);

notify(people[1].name);

Date and Time Types

● Date - day, month, year

● Time - hour, minute, second

● Duration - hour, minute, second

● Timestamp

Date and Time Arithmetic

var t : Time;

t = timeNow();

var dt : Duration;

dt.hour = 1;

t = addTime(t, dt);

Date and Time Utilities

● dateNow()

● timeNow()

● setDate(Date, year, month, day)

● setTime(Time, hour, min, sec)

● addDays(Date, days)

● dayOfWeek(Date)

● monthOfYear(Date)

● formatDate(Date, formatString)

● formatTime(Time, formatString)

● formatTimestamp(Timestamp, String)

Date FormattingCode Description Example

Resultd Day of the month without leading zero “1”dd Day of the month with leading zero “01”ddd The localised name for the day of the week “Sunday”m Month of the year without leading zero “1”mm Month of the year with leading zero “01”mmm The localised short (3 letter) name for the month “Jan”mmmm The localised full name for the month “January”yy The year as two digits “10”yyyy The year as four digits “2010”

var today : Date;today = dateNow();formatDate(today, “mmm d, yyyy”);

“January 1, 2011”

Time FormattingCode Description Example resultHHH Hour in 24 hour format with leading zero 19HH Hour in 24 hour format with leading zero 08H Hour in 12 hour format without leading zeros 8MM Minute with leading zero 05M Minute without leading zero 5SS Seconds with leading zero 09S Seconds without leading zero 9PP am / pm indicator am

var t : Time;t = timeNow();formatTime(t, “HH:MM:SS PP”);

“12:34:10 am”

Questions?