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Function std.file.read
Read entire contents of file name
and returns it as an untyped
array. If the file size is larger than upTo
, only upTo
bytes are read.
void[] read(R)
(
R name,
size_t upTo = size_t .max
)
if (isInputRange!R && isSomeChar!(ElementEncodingType!R) && !isInfinite!R && !isConvertibleToString!R);
void[] read(R)
(
auto ref R name,
size_t upTo = size_t .max
)
if (isConvertibleToString!R);
Parameters
Name | Description |
---|---|
name | string or range of characters representing the file name |
upTo | if present, the maximum number of bytes to read |
Returns
Untyped array of bytes read.
Throws
FileException
on error.
Example
import std .utf : byChar;
scope(exit)
{
assert(exists(deleteme));
remove(deleteme);
}
write(deleteme, "1234"); // deleteme is the name of a temporary file
writeln(read(deleteme, 2)); // "12"
writeln(read(deleteme .byChar)); // "1234"
writeln((cast(const(ubyte)[])read(deleteme)) .length); // 4
Authors
License
Copyright © 1999-2022 by the D Language Foundation | Page generated by ddox.