JsonArray PureBasic Reference Documentation

JsonArray

Current Version: 10.1.2

Represents a JSON array, which contains an ordered list of JSON values, where each value can be a string, number, JSON object, JSON array, true, false, or null.

Object Creation

obj.i = CkJsonArray::ckCreate()

; Make sure to dispose of the object when finished like this:
CkJsonArray::ckDispose(obj);

Properties

DebugLogFilePath

Declare.s ckDebugLogFilePath(obj.i)
Declare setCkDebugLogFilePath(obj.i, value.s)

If set to a file path, this property logs the LastErrorText of each Chilkat method or property call to the specified file. This logging helps identify the context and history of Chilkat calls leading up to any crash or hang, aiding in debugging.

Enabling the VerboseLogging property provides more detailed information. This property is mainly used for debugging rare instances where a Chilkat method call causes a hang or crash, which should generally not happen.

Possible causes of hangs include:

A timeout property set to 0, indicating an infinite timeout.
A hang occurring within an event callback in the application code.
An internal bug in the Chilkat code causing the hang.

More Information and Examples

Example showing how to use DebugLogFilePath.

EmitCompact

Declare.i ckEmitCompact(obj.i)
Declare setCkEmitCompact(obj.i, value.i)

Introduced in version 9.5.0.64

If 1 then the Emit method outputs in the most compact form possible (a single-line with no extra whitespace). If 0, then emits with whitespace and indentation to make the JSON human-readable.

The default value is 1.

EmitCrlf

Declare.i ckEmitCrlf(obj.i)
Declare setCkEmitCrlf(obj.i, value.i)

Introduced in version 9.5.0.64

If 1 then the Emit method uses CRLF line-endings when emitting the non-compact (pretty-print) format. If 0, then bare-LF's are emitted. (The compact format emits to a single line with no end-of-line characters.) Windows systems traditionally use CRLF line-endings, whereas Linux, Mac OS X, and other systems traditionally use bare-LF line-endings.

The default value is 1.

LastErrorHtml

Declare.s ckLastErrorHtml(obj.i) ; (read-only)

Provides HTML-formatted information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.

LastErrorText

Declare.s ckLastErrorText(obj.i) ; (read-only)

Provides plain text information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.

More Information and Examples

Concept of LastErrorText LastErrorText Standard Information

LastErrorXml

Declare.s ckLastErrorXml(obj.i) ; (read-only)

Provides XML-formatted information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.

LastMethodSuccess

Declare.i ckLastMethodSuccess(obj.i)
Declare setCkLastMethodSuccess(obj.i, value.i)

Indicates the success or failure of the most recent method call: 1 means success, 0 means failure. This property remains unchanged by property setters or getters. This method is present to address challenges in checking for null or Nothing returns in certain programming languages.

Size

Declare.i ckSize(obj.i) ; (read-only)

Introduced in version 9.5.0.56

The number of JSON values in the array.

VerboseLogging

Declare.i ckVerboseLogging(obj.i)
Declare setCkVerboseLogging(obj.i, value.i)

If set to 1, then the contents of LastErrorText (or LastErrorXml, or LastErrorHtml) may contain more verbose information. The default value is 0. Verbose logging should only be used for debugging. The potentially large quantity of logged information may adversely affect peformance.

Version

Declare.s ckVersion(obj.i) ; (read-only)

Version of the component/library, such as "10.1.0"

More Information and Examples

How to get the Chilkat version at runtime.

Methods

AddArrayAt

Declare.i ckAddArrayAt(obj.i, index.l)

Introduced in version 9.5.0.56

Inserts a new and empty JSON array member to the position indicated by index. To prepend, pass an index of 0. To append, pass an index of -1. Indexing is 0-based (the 1st member is at index 0).

Returns 1 for success, 0 for failure.

More Information and Examples

Modify Parts of JSON Document

AddBoolAt

Declare.i ckAddBoolAt(obj.i, index.l, value.l)

Introduced in version 9.5.0.56

Inserts a new boolean member to the position indicated by index. To prepend, pass an index of 0. To append, pass an index of -1. Indexing is 0-based (the 1st member is at index 0).

Returns 1 for success, 0 for failure.

More Information and Examples

Modify Parts of JSON Document

AddIntAt

Declare.i ckAddIntAt(obj.i, index.l, value.l)

Introduced in version 9.5.0.56

Inserts a new integer member to the position indicated by index. To prepend, pass an index of 0. To append, pass an index of -1. Indexing is 0-based (the 1st member is at index 0).

Returns 1 for success, 0 for failure.

More Information and Examples

Modify Parts of JSON Document

AddNullAt

Declare.i ckAddNullAt(obj.i, index.l)

Introduced in version 9.5.0.56

Inserts a new null member to the position indicated by index. To prepend, pass an index of 0. To append, pass an index of -1. Indexing is 0-based (the 1st member is at index 0).

Returns 1 for success, 0 for failure.

More Information and Examples

Modify Parts of JSON Document

AddNumberAt

Declare.i ckAddNumberAt(obj.i, index.l, numericStr.s)

Introduced in version 9.5.0.56

Inserts a new numeric member to the position indicated by index. The numericStr is an integer, float, or double already converted to a string in the format desired by the application. To prepend, pass an index of 0. To append, pass an index of -1. Indexing is 0-based (the 1st member is at index 0).

Returns 1 for success, 0 for failure.

More Information and Examples

Create more Complex JSON Document Modify Parts of JSON Document

AddObjectAt

Declare.i ckAddObjectAt(obj.i, index.l)

Introduced in version 9.5.0.56

Inserts a new and empty JSON object member to the position indicated by index. To prepend, pass an index of 0. To append, pass an index of -1. Indexing is 0-based (the 1st member is at index 0).

Returns 1 for success, 0 for failure.

More Information and Examples

Create more Complex JSON Document Modify Parts of JSON Document

AddObjectCopyAt

Declare.i ckAddObjectCopyAt(obj.i, index.l, jsonObj.i)

Introduced in version 9.5.0.82

Inserts a copy of a JSON object to the position indicated by index. To prepend, pass an index of 0. To append, pass an index of -1. Indexing is 0-based (the 1st member is at index 0).

Returns 1 for success, 0 for failure.

More Information and Examples

JSON Array AddObjectCopyAt Example

AddStringAt

Declare.i ckAddStringAt(obj.i, index.l, value.s)

Introduced in version 9.5.0.56

Inserts a new string at the position indicated by index. To prepend, pass an index of 0. To append, pass an index of -1. Indexing is 0-based (the 1st member is at index 0).

Returns 1 for success, 0 for failure.

More Information and Examples

Create more Complex JSON Document Modify Parts of JSON Document

AddUIntAt

Declare.i ckAddUIntAt(obj.i, index.l, value.l)

Introduced in version 9.5.0.96

Inserts a new unsigned integer member to the position indicated by index. To prepend, pass an index of 0. To append, pass an index of -1. Indexing is 0-based (the 1st member is at index 0).

Returns 1 for success, 0 for failure.

AppendArrayItems

Declare.i ckAppendArrayItems(obj.i, jarr.i)

Introduced in version 9.5.0.82

Appends the array items contained in jarr.

Returns 1 for success, 0 for failure.

More Information and Examples

AppendArrayItems Example

ArrayAt

Declare.i ckArrayAt(obj.i, index.l)

Introduced in version 9.5.0.56

Returns the JSON array that is the value of the Nth array element. Indexing is 0-based (the 1st member is at index 0).

Returns 0 on failure

More Information and Examples

JSON: Nested Array

BoolAt

Declare.i ckBoolAt(obj.i, index.l)

Introduced in version 9.5.0.56

Returns the boolean value of the Nth array element. Indexing is 0-based (the 1st member is at index 0).

Clear

Declare ckClear(obj.i)

Introduced in version 9.5.0.76

Deletes all array elements.

DateAt

Declare.i ckDateAt(obj.i, index.l, dateTime.i)

Introduced in version 9.5.0.73

Fills the dateTime with the date/time string located in the Nth array element. Indexing is 0-based (the 1st member is at index 0). Auto-recognizes the following date/time string formats: ISO-8061 Timestamp (such as "2009-11-04T19:55:41Z"), RFC822 date/time format (such as "Wed, 18 Apr 2018 15:51:55 -0400"), or Unix timestamp integers.

Returns 1 for success, 0 for failure.

DeleteAt

Declare.i ckDeleteAt(obj.i, index.l)

Introduced in version 9.5.0.56

Deletes the array element at the given index. Indexing is 0-based (the 1st member is at index 0).

Returns 1 for success, 0 for failure.

More Information and Examples

Modify Parts of JSON Document

DtAt

Declare.i ckDtAt(obj.i, index.l, bLocal.l, dt.i)

Introduced in version 9.5.0.73

Fills the dt with the date/time string located in the Nth array element. If bLocal is 1, then dt is filled with the local date/time values, otherwise it is filled with the UTC/GMT values. Indexing is 0-based (the 1st member is at index 0). Auto-recognizes the following date/time string formats: ISO-8061 Timestamp (such as "2009-11-04T19:55:41Z"), RFC822 date/time format (such as "Wed, 18 Apr 2018 15:51:55 -0400"), or Unix timestamp integers.

Returns 1 for success, 0 for failure.

Emit

Declare.s ckEmit(obj.i)

Introduced in version 9.5.0.58

Writes the JSON array (rooted at the caller) and returns as a string.

Note: To control the compact/non-compact format, and to control the LF/CRLF line-endings, set the EmitCompact and EmitCrlf properties.

Returns an empty string on failure. Use the LastMethodSuccess property to check for success.

EmitSb

Declare.i ckEmitSb(obj.i, sb.i)

Introduced in version 9.5.0.65

Writes the JSON array to the sb.

Note: To control the compact/non-compact format, and to control the LF/CRLF line-endings, set the EmitCompact and EmitCrlf properties.

Returns 1 for success, 0 for failure.

More Information and Examples

Emit JSON Array to StringBuilder

FindObject

Declare.i ckFindObject(obj.i, name.s, value.s, caseSensitive.l)

Introduced in version 9.5.0.73

Return the index of the first object in the array where value of the field at name matches value. name is an object member name. The value is a value pattern which can use "*" chars to indicate zero or more of any char. If caseSensitive is 0, then the matching is case insenstive, otherwise it is case sensitive. Returns -1 if no matching string was found.

More Information and Examples

Find and Delete Object from JSON Array

FindString

Declare.i ckFindString(obj.i, value.s, caseSensitive.l)

Introduced in version 9.5.0.73

Return the index of the first matching string in the array. The value is a value pattern which can use "*" chars to indicate zero or more of any char. If caseSensitive is 0, then the matching is case insenstive, otherwise it is case sensitive. Returns -1 if no matching string was found.

IntAt

Declare.i ckIntAt(obj.i, index.l)

Introduced in version 9.5.0.56

Returns the integer value of the Nth array element. Indexing is 0-based (the 1st member is at index 0).

More Information and Examples

JSON: Access Array Values

IsNullAt

Declare.i ckIsNullAt(obj.i, index.l)

Introduced in version 9.5.0.56

Returns the 1 if the Nth array element is null, otherwise returns 0. Indexing is 0-based (the 1st member is at index 0).

More Information and Examples

Modify Parts of JSON Document

Load

Declare.i ckLoad(obj.i, jsonArray.s)

Introduced in version 9.5.0.64

Loads a JSON array from a string. A JSON array must begin with a "[" and end with a "]".

Note: The Load method causes the JsonArray to detach and become it's own JSON document. It should only be called on new instances of the JsonArray. See the example below.

Returns 1 for success, 0 for failure.

More Information and Examples

Load a JsonArray Loading and Parsing a JSON Array Understanding JSON Array vs JSON Object

LoadSb

Declare.i ckLoadSb(obj.i, sb.i)

Introduced in version 9.5.0.64

Loads a JSON array from a StringBuilder. A JSON array must begin with a "[" and end with a "]".

Note: The Load method causes the JsonArray to detach and become it's own JSON document. It should only be called on new instances of the JsonArray. See the example below.

Returns 1 for success, 0 for failure.

More Information and Examples

Load a JsonArray

ObjectAt

Declare.i ckObjectAt(obj.i, index.l)

Introduced in version 9.5.0.56

Returns the JSON object that is the value of the Nth array element. Indexing is 0-based (the 1st member is at index 0).

Returns 0 on failure

More Information and Examples

JSON: Array of Objects Create more Complex JSON Document Modify Parts of JSON Document

SetBoolAt

Declare.i ckSetBoolAt(obj.i, index.l, value.l)

Introduced in version 9.5.0.56

Sets the boolean value of the Nth array element. Indexing is 0-based (the 1st member is at index 0).

Returns 1 for success, 0 for failure.

More Information and Examples

Modify Parts of JSON Document

SetIntAt

Declare.i ckSetIntAt(obj.i, index.l, value.l)

Introduced in version 9.5.0.56

Sets the integer value of the Nth array element. Indexing is 0-based (the 1st member is at index 0).

Returns 1 for success, 0 for failure.

More Information and Examples

Modify Parts of JSON Document

SetNullAt

Declare.i ckSetNullAt(obj.i, index.l)

Introduced in version 9.5.0.56

Sets the Nth array element to the value of null. Indexing is 0-based (the 1st member is at index 0).

Returns 1 for success, 0 for failure.

SetNumberAt

Declare.i ckSetNumberAt(obj.i, index.l, value.s)

Introduced in version 9.5.0.56

Sets the numeric value of the Nth array element. The value is an integer, float, or double already converted to a string in the format desired by the application. Indexing is 0-based (the 1st member is at index 0).

Returns 1 for success, 0 for failure.

More Information and Examples

Modify Parts of JSON Document

SetStringAt

Declare.i ckSetStringAt(obj.i, index.l, value.s)

Introduced in version 9.5.0.56

Sets the string value of the Nth array element. Indexing is 0-based (the 1st member is at index 0).

Returns 1 for success, 0 for failure.

More Information and Examples

Modify Parts of JSON Document

SetUIntAt

Declare.i ckSetUIntAt(obj.i, index.l, value.l)

Introduced in version 9.5.0.96

Sets the unsigned integer value of the Nth array element. Indexing is 0-based (the 1st member is at index 0).

Returns 1 for success, 0 for failure.

StringAt

Declare.s ckStringAt(obj.i, index.l)

Introduced in version 9.5.0.56

Returns the string value of the Nth array element. Indexing is 0-based (the 1st member is at index 0).

Returns an empty string on failure. Use the LastMethodSuccess property to check for success.

More Information and Examples

JSON: Access Array Values

Swap

Declare.i ckSwap(obj.i, index1.l, index2.l)

Introduced in version 9.5.0.76

Swaps the items at positions index1 and index2.

Returns 1 for success, 0 for failure.

TypeAt

Declare.i ckTypeAt(obj.i, index.l)

Introduced in version 9.5.0.58

Returns the type of data at the given index. Possible return values are:

string
number
object
array
boolean
null

Returns -1 if no member exists at the given index.

UIntAt

Declare.i ckUIntAt(obj.i, index.l)

Introduced in version 9.5.0.96

Returns the unsigned integer value of the Nth array element. Indexing is 0-based (the 1st member is at index 0).