Accessing and Storing Functions
- See also: Expression Language and Function Index
The functions in this section access field values, store and load global variables, access file tags, and access note fields.
Field(…)
- Returns a field's value.
Description | Field(name, mode)
The Field() function returns the value stored in field name. The format of return is selected by mode. Available mode values:
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Examples | field(album)
field(date, 0)
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Load(…)
- Outputs the value of a global variable.
Description | load(varname)
Loads and outputs the value of the specified global variable varname that has been previously stored with Save(). |
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Examples | load(var1)
save(math(1 + 2), sum)load(sum)
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Note(…)
- Retrieve note fields.
Description | note(field label, field type, occurrence)
The Note() function retrieves information from a Media Center Note. Specifically, it returns the contents associated with a field label, of a given field type. The Nth occurrence may be requested. Notes data may be simple text, or associated with defined a field label. Currently the only type of field label is contact information. The first line of a Note is associated with the omnipresent field label Name. The field type selects the specific sub-type for a given field label, and occurrence selects which instance of several field label / field type pairs is returned. The occurrence value is zero-based.
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Examples | note(phone)
note(phone, home)
note(phone, home)
note(phone, home, 1))
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Save(…)
- Saves a value to a global variable.
Description | save(value, variable, mode)
This Save() function saves the value into the specified global variable, and optionally will return that value if mode is set. Once a global variable has been created using Save(), that variable's value is available for use with either Load() or the pseudo-field "[variable]". Available mode values:
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Examples | save(Much Money, local_bank)
save(More Money, My Bank, 1)
save(math([duration,0] / 60), durmins)if(compare([durmins], >, 5.0), Long Track, Short Track)
Additional Examples |
SaveAdd(…)
- Adds to a global variable.
Description | saveadd(variable, value, mode)
The SaveAdd() function adds value to a global variable either numerically or as a list item. The mode argument indicates how variable is modified. Available mode values:
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Examples | saveadd(v, 1)
saveadd(v, math(2 - 6))
load(foo, v)saveadd(v, bar, 1)load(v)
load(That, v)saveadd(v, This, 2)load(v)
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Tag(…)
- Returns a file's physical tag.
Description | tag(tag name)
The Tag() function reads and returns the value of tag name directly from a file. The Media Center Library database is not used with Tag(), and instead the specified file is read for the requested tag. The spelling and letter case of the tag name must match exactly those stored in the file. Performance note: This function must open and read the actual file, so its performance is significantly slower than other functions which operate on database fields. |
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Examples | tag(My Personal Tag)
tag(Gapless Header)
tag(exif: Date)
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