Interactive Utilities
This module is intended for interactive work. It is loaded automaticaly in interactive mode.
Base.Docs.apropos
— Functionapropos([io::IO=stdout], pattern::Union{AbstractString,Regex})
Search available docstrings for entries containing pattern
.
When pattern
is a string, case is ignored. Results are printed to io
.
apropos
can be called from the help mode in the REPL by wrapping the query in double quotes:
help?> "pattern"
InteractiveUtils.varinfo
— Functionvarinfo(m::Module=Main, pattern::Regex=r""; all::Bool = false, imported::Bool = false, sortby::Symbol = :name, minsize::Int = 0)
Return a markdown table giving information about exported global variables in a module, optionally restricted to those matching pattern
.
The memory consumption estimate is an approximate lower bound on the size of the internal structure of the object.
all
: also list non-exported objects defined in the module, deprecated objects, and compiler-generated objects.imported
: also list objects explicitly imported from other modules.recursive
: recursively include objects in sub-modules, observing the same settings in each.sortby
: the column to sort results by. Options are:name
(default),:size
, and:summary
.minsize
: only includes objects with size at leastminsize
bytes. Defaults to0
.
InteractiveUtils.versioninfo
— Functionversioninfo(io::IO=stdout; verbose::Bool=false)
Print information about the version of Julia in use. The output is controlled with boolean keyword arguments:
verbose
: print all additional information
The output of this function may contain sensitive information. Before sharing the output, please review the output and remove any data that should not be shared publicly.
See also: VERSION
.
InteractiveUtils.methodswith
— Functionmethodswith(typ[, module or function]; supertypes::Bool=false])
Return an array of methods with an argument of type typ
.
The optional second argument restricts the search to a particular module or function (the default is all top-level modules).
If keyword supertypes
is true
, also return arguments with a parent type of typ
, excluding type Any
.
InteractiveUtils.subtypes
— Functionsubtypes(T::DataType)
Return a list of immediate subtypes of DataType T
. Note that all currently loaded subtypes are included, including those not visible in the current module.
See also supertype
, supertypes
, methodswith
.
Examples
julia> subtypes(Integer)
3-element Vector{Any}:
Bool
Signed
Unsigned
InteractiveUtils.supertypes
— FunctionInteractiveUtils.edit
— Methodedit(path::AbstractString, line::Integer=0)
Edit a file or directory optionally providing a line number to edit the file at. Return to the julia
prompt when you quit the editor. The editor can be changed by setting JULIA_EDITOR
, VISUAL
or EDITOR
as an environment variable.
See also define_editor
.
InteractiveUtils.edit
— Methodedit(function, [types])
edit(module)
Edit the definition of a function, optionally specifying a tuple of types to indicate which method to edit. For modules, open the main source file. The module needs to be loaded with using
or import
first.
edit
on modules requires at least Julia 1.1.
To ensure that the file can be opened at the given line, you may need to call define_editor
first.
InteractiveUtils.@edit
— MacroInteractiveUtils.define_editor
— Functiondefine_editor(fn, pattern; wait=false)
Define a new editor matching pattern
that can be used to open a file (possibly at a given line number) using fn
.
The fn
argument is a function that determines how to open a file with the given editor. It should take three arguments, as follows:
cmd
- a base command object for the editorpath
- the path to the source file to openline
- the line number to open the editor at
Editors which cannot open to a specific line with a command may ignore the line
argument. The fn
callback must return either an appropriate Cmd
object to open a file or nothing
to indicate that they cannot edit this file. Use nothing
to indicate that this editor is not appropriate for the current environment and another editor should be attempted. It is possible to add more general editing hooks that need not spawn external commands by pushing a callback directly to the vector EDITOR_CALLBACKS
.
The pattern
argument is a string, regular expression, or an array of strings and regular expressions. For the fn
to be called, one of the patterns must match the value of EDITOR
, VISUAL
or JULIA_EDITOR
. For strings, the string must equal the basename
of the first word of the editor command, with its extension, if any, removed. E.g. "vi" doesn't match "vim -g" but matches "/usr/bin/vi -m"; it also matches vi.exe
. If pattern
is a regex it is matched against all of the editor command as a shell-escaped string. An array pattern matches if any of its items match. If multiple editors match, the one added most recently is used.
By default julia does not wait for the editor to close, running it in the background. However, if the editor is terminal based, you will probably want to set wait=true
and julia will wait for the editor to close before resuming.
If one of the editor environment variables is set, but no editor entry matches it, the default editor entry is invoked:
(cmd, path, line) -> `$cmd $path`
Note that many editors are already defined. All of the following commands should already work:
- emacs
- emacsclient
- vim
- nvim
- nano
- micro
- kak
- textmate
- mate
- kate
- subl
- atom
- notepad++
- Visual Studio Code
- open
- pycharm
- bbedit
Example:
The following defines the usage of terminal-based emacs
:
define_editor(
r"\bemacs\b.*\s(-nw|--no-window-system)\b", wait=true) do cmd, path, line
`$cmd +$line $path`
end
define_editor
was introduced in Julia 1.4.
InteractiveUtils.less
— Methodless(file::AbstractString, [line::Integer])
Show a file using the default pager, optionally providing a starting line number. Returns to the julia
prompt when you quit the pager.
InteractiveUtils.less
— Methodless(function, [types])
Show the definition of a function using the default pager, optionally specifying a tuple of types to indicate which method to see.
InteractiveUtils.@less
— Macro@less
Evaluates the arguments to the function or macro call, determines their types, and calls the less
function on the resulting expression.
See also: @edit
, @which
, @code_lowered
.
InteractiveUtils.@which
— Macro@which
Applied to a function or macro call, it evaluates the arguments to the specified call, and returns the Method
object for the method that would be called for those arguments. Applied to a variable, it returns the module in which the variable was bound. It calls out to the which
function.
InteractiveUtils.@functionloc
— Macro@functionloc
Applied to a function or macro call, it evaluates the arguments to the specified call, and returns a tuple (filename,line)
giving the location for the method that would be called for those arguments. It calls out to the functionloc
function.
InteractiveUtils.@code_lowered
— Macro@code_lowered
Evaluates the arguments to the function or macro call, determines their types, and calls code_lowered
on the resulting expression.
InteractiveUtils.@code_typed
— Macro@code_typed
Evaluates the arguments to the function or macro call, determines their types, and calls code_typed
on the resulting expression. Use the optional argument optimize
with
@code_typed optimize=true foo(x)
to control whether additional optimizations, such as inlining, are also applied.
InteractiveUtils.code_warntype
— Functioncode_warntype([io::IO], f, types; debuginfo=:default)
Prints lowered and type-inferred ASTs for the methods matching the given generic function and type signature to io
which defaults to stdout
. The ASTs are annotated in such a way as to cause "non-leaf" types to be emphasized (if color is available, displayed in red). This serves as a warning of potential type instability. Not all non-leaf types are particularly problematic for performance, so the results need to be used judiciously. In particular, unions containing either missing
or nothing
are displayed in yellow, since these are often intentional.
Keyword argument debuginfo
may be one of :source
or :none
(default), to specify the verbosity of code comments.
See @code_warntype
for more information.
InteractiveUtils.@code_warntype
— Macro@code_warntype
Evaluates the arguments to the function or macro call, determines their types, and calls code_warntype
on the resulting expression.
InteractiveUtils.code_llvm
— Functioncode_llvm([io=stdout,], f, types; raw=false, dump_module=false, optimize=true, debuginfo=:default)
Prints the LLVM bitcodes generated for running the method matching the given generic function and type signature to io
.
If the optimize
keyword is unset, the code will be shown before LLVM optimizations. All metadata and dbg.* calls are removed from the printed bitcode. For the full IR, set the raw
keyword to true. To dump the entire module that encapsulates the function (with declarations), set the dump_module
keyword to true. Keyword argument debuginfo
may be one of source (default) or none, to specify the verbosity of code comments.
InteractiveUtils.@code_llvm
— Macro@code_llvm
Evaluates the arguments to the function or macro call, determines their types, and calls code_llvm
on the resulting expression. Set the optional keyword arguments raw
, dump_module
, debuginfo
, optimize
by putting them and their value before the function call, like this:
@code_llvm raw=true dump_module=true debuginfo=:default f(x)
@code_llvm optimize=false f(x)
optimize
controls whether additional optimizations, such as inlining, are also applied. raw
makes all metadata and dbg.* calls visible. debuginfo
may be one of :source
(default) or :none
, to specify the verbosity of code comments. dump_module
prints the entire module that encapsulates the function.
InteractiveUtils.code_native
— Functioncode_native([io=stdout,], f, types; syntax=:att, debuginfo=:default, binary=false, dump_module=true)
Prints the native assembly instructions generated for running the method matching the given generic function and type signature to io
.
- Set assembly syntax by setting
syntax
to:att
(default) for AT&T syntax or:intel
for Intel syntax. - Specify verbosity of code comments by setting
debuginfo
to:source
(default) or:none
. - If
binary
istrue
, also print the binary machine code for each instruction precedented by an abbreviated address. - If
dump_module
isfalse
, do not print metadata such as rodata or directives.
See also: @code_native
, code_llvm
, code_typed
and code_lowered
InteractiveUtils.@code_native
— Macro@code_native
Evaluates the arguments to the function or macro call, determines their types, and calls code_native
on the resulting expression.
Set any of the optional keyword arguments syntax
, debuginfo
, binary
or dump_module
by putting it before the function call, like this:
@code_native syntax=:intel debuginfo=:default binary=true dump_module=false f(x)
- Set assembly syntax by setting
syntax
to:att
(default) for AT&T syntax or:intel
for Intel syntax. - Specify verbosity of code comments by setting
debuginfo
to:source
(default) or:none
. - If
binary
istrue
, also print the binary machine code for each instruction precedented by an abbreviated address. - If
dump_module
isfalse
, do not print metadata such as rodata or directives.
See also: code_native
, @code_llvm
, @code_typed
and @code_lowered
InteractiveUtils.clipboard
— Functionclipboard(x)
Send a printed form of x
to the operating system clipboard ("copy").
clipboard() -> AbstractString
Return a string with the contents of the operating system clipboard ("paste").