Call queue in asterisk8/1/2023 The most common situation is where a single-word string that looks like a number, boolean or tag requires disambiguation by surrounding it with quotes or using an explicit datatype tag. YAML autodetects the datatype of the entity, but sometimes one wants to cast the datatype explicitly. Finally YAML defines a way to extend the data type definitions locally to accommodate user-defined classes, structures or primitives (e.g. Many more advanced data types, such as binary data, are defined in the YAML specification but not supported in all implementations. Core are ones expected to exist in any parser (e.g. Data types can be divided into three categories: core, defined, and user-defined. # Sequencer protocols for Laser eye surgery - step : &id001 # defines anchor label &id001 instrument : Lasik 2000 pulseEnergy : 5.4 pulseDuration : 12 repetition : 1000 spotSize : 1mm - step : &id002 instrument : Lasik 2000 pulseEnergy : 5.0 pulseDuration : 10 repetition : 500 spotSize : 2mm - Instrument1 : *id001 # refers to the first step (with anchor &id001) - Instrument2 : *id002 # refers to the second stepĮxplicit data typing is seldom seen in the majority of YAML documents since YAML autodetects simple types. References to the anchor work for all data types (see the ship-to reference in the example below).īelow is an example of a queue in an instrument sequencer in which two steps are reused repeatedly without being fully described each time. įor clarity, compactness, and avoiding data entry errors, YAML provides node anchors (using &) and references (using *). YAML structures enable storage of multiple documents within a single file, usage of references for repeated nodes, and usage of arbitrary nodes as keys. Two features that distinguish YAML from the capabilities of other data-serialization languages are structures and data typing. The second lists them by gender it is a key-value object containing two lists. The first example is a list of key-value objects, all people from the Smith family. Objects and lists are important components in yaml and can be mixed. It uses both Python-style indentation to indicate nesting, and a more compact format that uses for lists and - name : Mary Smith age : 27 - : # sequences as keys are supported - # People, by gender men : women : - Mary Smith - Susan Williams YAML targets many of the same communications applications as Extensible Markup Language (XML) but has a minimal syntax which intentionally differs from Standard Generalized Markup Language (SGML). It is commonly used for configuration files and in applications where data is being stored or transmitted. YAML ( / ˈ j æ m ə l/) ( see § History and name) is a human-readable data-serialization language.
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