04 meme script

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);

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)
{
}
else
{
notify(“A is small”);
}

IF / ELSIF / ELSE
}
}
elsif (a > 5)
{
notify(“A is medium sized”);
}
else
{
}

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”);
}

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

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[];
append(names, "Fred");

INSERT
append(names, "Fred");
insert(names, "Joe", 0);

Collections and []
var fred : Person[];
fred.name = "Fred";
fred.tel = "12345";
people.append(fred);
var jane : Person[];
jane.name = "Fred";
jane.tel = "12345";
people.append(jane);

Removing from a Collection
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 Formatting
Code Description Example
Result
d 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 Formatting
Code Description Example result
HHH Hour in 24 hour format with leading zero 19
HH Hour in 24 hour format with leading zero 08
H Hour in 12 hour format without leading zeros 8
MM Minute with leading zero 05
M Minute without leading zero 5
SS Seconds with leading zero 09
S Seconds without leading zero 9
PP am / pm indicator am

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

“12:34:10 am”

04 meme script

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