writedictionary

Write dictionary to file.

📝Syntax

writedictionary(d, filename)
writedictionary(d, filename, Name, Value)

📥Input Arguments

Parameter	Description
d	scalar: configured dictionary object.
filename	text scalar: destination file name.

📄Description

writedictionary(d, filename) writes the configured dictionary d to a JSON file.

Dictionary keys are written as JSON object member names. Keys must be text, numeric, or logical scalar values. Values can be scalar values, arrays, cell arrays, structures, or structure arrays when they can be represented as JSON values.

writedictionary(d, filename, Name, Value) customizes the write operation. Supported options are:

FileType: file type. Supported values are 'auto' and 'json'. Only JSON dictionary files are currently supported.
PrettyPrint: logical scalar. When true, writes indented JSON text. Default is true.
PreserveInfAndNaN: logical scalar. When true, writes NaN, Infinity, and -Infinity tokens for non-finite numeric values. Default is true.

MAT and NH5 persistence for dictionary variables is handled by savemat/loadmat and savenh5/loadnh5.

💡Examples

Write and read a dictionary stored as JSON.

filename = [tempdir(), 'products.json'];
d = dictionary(["apple", "banana"], [1.2, 2.3]);
writedictionary(d, filename);
r = readdictionary(filename)

Write heterogeneous dictionary values.

filename = [tempdir(), 'mixed_dictionary.json'];
d = dictionary(["vector", "data"], {[1 NaN Inf], struct('name', "Nelson")});
writedictionary(d, filename, 'PrettyPrint', false);
r = readdictionary(filename)

🕔Version History

Version	Description
2.0.0	initial version

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