Difference between revisions of "ReNamer:Pascal Script:Types"
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'''Note:''' [[Unicode]] article highlights the difference between Unicode and Ansi. | '''Note:''' [[Unicode]] article highlights the difference between Unicode and Ansi. | ||
+ | |||
+ | == Pointer types == | ||
+ | |||
+ | {| class="wikitable" | ||
+ | ! Type | ||
+ | ! Description | ||
+ | |- | ||
+ | | '''PChar''' | ||
+ | | Pointer to a Char value, and can also be used to point to characters within a string | ||
+ | |} | ||
== Other types == | == Other types == | ||
Line 116: | Line 126: | ||
</pre> | </pre> | ||
− | | An enumeration is simply a fixed range of named values | + | | An enumeration is simply a fixed range of named values |
|- | |- | ||
| | | | ||
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| '''TDateTime''' | | '''TDateTime''' | ||
| Double | | Double | ||
− | | Holds date and time | + | | Holds date and time |
|- | |- | ||
| '''TStringsArray''' | | '''TStringsArray''' | ||
| Array of WideString | | Array of WideString | ||
− | | Holds an indexable sequence of WideString | + | | Holds an indexable sequence of WideString |
|} | |} | ||
[[Category:ReNamer]] | [[Category:ReNamer]] |
Revision as of 00:36, 27 November 2011
This page lists and explains all supported types in Pascal Script used within ReNamer.
Integer types
Type | Size | Range |
---|---|---|
Byte | 1 byte | 0 .. 255 |
ShortInt | 1 byte | -128 .. 127 |
Word | 2 bytes | 0 .. 65535 |
SmallInt | 2 bytes | -32768 .. 32767 |
Cardinal | 4 bytes | 0 .. 4294967295 |
Integer | 4 bytes | -2147483648 .. 2147483647 |
Floating point types
Type | Size | Range |
---|---|---|
Single | 4 bytes | 1.5 x 10-45 .. 3.4 x 1038 |
Double | 8 bytes | 5.0 x 10-324 .. 1.7 x 10308 |
Extended | 10 bytes | 3.6 x 10-4951 .. 1.1 x 104932 |
String types
Type | Description |
---|---|
Char | Stores a single Ansi character |
String | Holds a sequence of Ansi characters of any length |
WideChar | Stores a single Unicode character |
WideString | Holds a sequence of Unicode characters of any length |
Note: Unicode article highlights the difference between Unicode and Ansi.
Pointer types
Type | Description |
---|---|
PChar | Pointer to a Char value, and can also be used to point to characters within a string |
Other types
Type | Description |
---|---|
Boolean | Provides an enumeration of the logical True and False values |
Array | Single and multi dimensional indexable sequences of data |
Record | Provides means of collecting together a set of different data types into one named structure |
Variant | Provides a flexible general purpose data type |
Enumerations and Sets
For example, the Boolean data type is itself an enumeration, with two possible values: True and False. If you try to assign a different value to a Boolean variable, the code will not compile.
Example | Description |
---|---|
type TDay = (Mon, Tue, Wed, Thu, Fri, Sat, Sun); var Day: TDay; begin Day := Mon; if Day <> Tue then Day := Wed; end. |
An enumeration is simply a fixed range of named values |
type TDay = (Mon, Tue, Wed, Thu, Fri, Sat, Sun); TDays = set of TDay; var Days: TDays; begin Days := [Mon, Tue, Wed]; if Sun in Days then Days := Days - [Sun]; end. |
Whereas enumerations allow a variable to have one, and only one, value from a fixed number of values, sets allow you to have any combination of the given values |
Custom types
Several types are custom defined to simplify the usage of some functions.
Type | Declared as | Description |
---|---|---|
TDateTime | Double | Holds date and time |
TStringsArray | Array of WideString | Holds an indexable sequence of WideString |