| Directive |
Description |
| and |
(Logical) boolean operator requiring both conditions are true for the result to be true |
| begin |
start of a block of code |
| break |
exit a case statement, or a loop |
| case |
select a particular segment of code to execute based on a value |
| class |
A class can be seen as a pointer to an object, or a pointer to a record, with methods associated with it |
| const |
declare an identifier with a fixed value, or a variable with an initialized value |
| continue |
skips an iteration in a loop and starts execution at the beginning of the loop |
| dispose |
free dynamically allocated memory, allocated by new |
| div |
integer divide operator |
| do |
used to indicate start of a for/while loop |
| downto |
used in a for loop to indicate the index variable is decremented |
| else |
used in if statement to provide an execution path when the if test fails |
| end |
end of a block of code, or the end of a record or class construct |
| except |
exception handling block |
| exit |
exit current subroutine |
| false |
boolean value indicating a test failed; opposite of true |
| file |
external data structure, typically used for binary/block access |
| finally |
code ran if no exception occurs, or an exit command first executes all statements in the finally blocks before actually exiting |
| for |
loop used to increment or decrement a control variable |
| forward |
method declared without its implementation as the definition is needed before it can be implemented |
| freemem |
returns a previously requested chunk of memory to the operating system |
| function |
define a routine that returns a result value |
| getmem |
request a chunk of memory to be reserved for your application |
| goto |
used to exit a segment of code and jump to another point |
| if |
test a condition and perform a set of instructions based on the result |
| in |
identifies elements in a collection |
| inherited |
used to call the parent class' implementation of the virtual method |
| inline |
copy of this code is inserted directly into the calling routine |
| label |
defines the target jump point for a goto |
| mod |
operator used to return the remainder of an integer division |
| new |
dynamically allocate memory for variable, old days you needed heap allocation |
| nil |
pointer value indicating the pointer does not contain a value |
| not |
boolean operator that negates the result of a test |
| of |
defines the characteristics of a case variable |
| operator |
is also a reserved word that appears in the course of operator overloading |
| or |
boolean operator which allows either of two choices to be used |
| out |
declare variable parameter to ignores the original value and only push out the result |
| procedure |
define a routine that does not return a result value |
| program |
defines start of an application. This keyword is optional |
| record |
group a series of variables under a single name |
| repeat |
loop through a block of code to an until statement, repeating as long as the result of the until test is not true |
| self |
used in instance methods to refer to the object on which the currently executing method has been invoked |
| set |
group an enumerator collection |
| text |
used to read from and write to a text file |
| then |
indicates start of code in an if test |
| to |
indicates a for variable maximum value to be incremented |
| true |
boolean value indicating a test succeeded; opposite of false |
| try |
the following block of code is doing exception trapping handled by except and/or finally |
| type |
declares kinds of records or new classes of variables |
| until |
indicates end of a repeat statement, where the test condition is tested to allow the code to repeat again |
| uses |
lists built-in units this program refers to |
| var |
declare variables |
| while |
test condition and if true, loop through a section of code, until not true |
| with |
reference the internal variables within a record or class without having to refer to the record or class itself |
| xor |
boolean operator used to invert an or test |
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