Verbose & Progress Switches

Every Mera function takes verbose= and show_progress= keywords. To set them globally — so you don't repeat them on every call — Mera has three switches. Each is tri-state:

The neutral state (nothing) is the default, and is how you hand control back to the individual calls.

One master switch: output_mode

Most often you just want Mera quiet — no messages and no progress bars. output_mode sets both at once, so you don't toggle them separately:

using Mera

output_mode(false)     # silence everything: messages AND progress bars, everywhere
gas = gethydro(info)   # … runs silently, no need for verbose=false, show_progress=false

output_mode(true)      # force both on
output_mode(nothing)   # back to per-function control (the default)
output_mode()          # show current state of both

The individual switches

If you want to control them separately — e.g. keep the informative messages but drop the progress bars in a log file — use verbose and showprogress:

verbose(false)        # no Mera text messages
showprogress(false)   # no progress bars

verbose()             # prints "verbose_mode: false"
showprogress()        # prints "showprogress_mode: false"

verbose(nothing)      # each function decides again (uses its verbose= argument)
showprogress(nothing)

output_mode is simply both of these together: output_mode(x) ≡ verbose(x); showprogress(x).

When to use which

• Notebook / interactive — leave it neutral (nothing) and pass verbose=false to the odd call you want quiet.
• Scripts / batch jobs / CI — output_mode(false) once at the top silences the whole run.
• Per-call, repeatedly — bundle verbose/show_progress into an ArgumentsType (see Bundling arguments) and pass myargs=.

See also

• Bundling arguments (myargs) — set shared arguments (including the output switches) once and reuse them.
• verbose, showprogress, output_mode — the switch functions.