Trait opencv::core::FileStorageTraitConst[−][src]

pub trait FileStorageTraitConst {
    fn as_raw_FileStorage(&self) -> *const c_void;

    fn state(&self) -> i32 { ... }
    fn elname(&self) -> String { ... }
    fn is_opened(&self) -> Result<bool> { ... }
    fn get_first_top_level_node(&self) -> Result<FileNode> { ... }
    fn root(&self, streamidx: i32) -> Result<FileNode> { ... }
    fn get(&self, nodename: &str) -> Result<FileNode> { ... }
    fn get_node(&self, nodename: &str) -> Result<FileNode> { ... }
    fn get_format(&self) -> Result<i32> { ... }
}

Expand description

XML/YAML/JSON file storage class that encapsulates all the information necessary for writing or reading data to/from a file.

Required methods

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fn as_raw_FileStorage(&self) -> *const c_void

Provided methods

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fn state(&self) -> i32

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fn elname(&self) -> String

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fn is_opened(&self) -> Result<bool>

Checks whether the file is opened.

Returns

true if the object is associated with the current file and false otherwise. It is a good practice to call this method after you tried to open a file.

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fn get_first_top_level_node(&self) -> Result<FileNode>

Returns the first element of the top-level mapping.

Returns

The first element of the top-level mapping.

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fn root(&self, streamidx: i32) -> Result<FileNode>

Returns the top-level mapping

Parameters

streamidx: Zero-based index of the stream. In most cases there is only one stream in the file. However, YAML supports multiple streams and so there can be several.