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Check output device is a terminal: Difference between revisions
Check output device is a terminal (view source)
Revision as of 12:27, 15 February 2024
, 3 months ago→{{header|Standard ML}}
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imported>Regattaguru |
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=={{header|Standard ML}}==
<syntaxhighlight lang="sml">val stdoutRefersToTerminal : bool = Posix.ProcEnv.isatty Posix.FileSys.stdout</syntaxhighlight>
=={{header|Swift}}==
<syntaxhighlight lang="swift">print(isatty(STDOUT_FILENO) != 0 ? "TTY" : "Not TTY" )</syntaxhighlight>
=={{header|Tcl}}==
To detect whether output is going to a terminal in Tcl, you check whether the <code>stdout</code> channel looks like a serial line (as those are indistinguishable from terminals). The simplest way of doing that is to see whether you can read the <tt>-mode</tt> or <code>-xchar</code> channel options, which are only present on serial channels:
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