Method

GrlDatalength

since: 0.1.10

Declaration [src] 

guint
grl_data_length (
  GrlData* data,
  GrlKeyID key
)

Description [src]

Returns how many values key or related keys have in data: if key has no value, but a related key has, then it is counted as positive.

As example, let’s think in three related keys, K1, K2 and K3, and then thinks we have added several values for those keys, as:

(V10, V20, V30), (V11, NULL, V31), (V12, NULL, V32)

Therefore, when invoking grl_data_length (data, K2) it will return 3: considering K2 and the related keys (K1 and K3), there are 3 values.

Available since: 0.1.10

Parameters

key

Type: GrlKeyID

A metadata key.

Return value

Type: guint

Number of values.