I call an auto complete function in perl it returns an array and values printed but I want each command display help text too - same as cisco/juniper does.
I can't print inside any function.
$attr->{print_completions_horizontally} = "on"; and I print its result it is on, but still the result is not achieved.
desired result:
show ?
show print's different system variables.
result im getting (when i press the tab key):
s (tab)
promt>
set show
promt> set
Related
I have a loop which iterates through a list of ID numbers paired with a given stress value. The code works fine, except there is no guarantee that the lists have identical lengths. I currently have an if isempty(stress_value) loop with a continue statement if an ID number doesn't have corresponding stress value. All of this takes place in a for id = 1:num_ids loop.
I am now trying to print this id value (class 'double') to the command line, if it doesn't have an assigned stress value, so if the isempty statement is True, prior to continuing out of the loop. As an example, if I set num_ids equal to 101, but the list I'm iterating through only has ID values 1-100, I want to output this 101 ID to the command line.
I've tried printing as an error like this:
error(['The following ID does not have an assigned stress value: ',id])
Here id simply prints as e however when I try this in the command window, which I don't quite understand. When I run it in the script nothing is printed to the command window.
I have also tried simply adding a display command for the id to the loop as follows, however when I run the code nothing shows up again:
disp(id)
Sorry for the simple question, but I have not found an effective way to do this yet, and would appreciate your feedback!
Check the fprintf. You can format your output just like you want.
for id=1:num_ids
% do something
if isempty(stress_value)
fprintf('The following ID does not have an assigned stress value: %d\n',id)
continue
end
% do something
end
The error function will stop code execution.
The display function only prints the value of the variable, without printing the variable name.
I'm writing some functions in a Jupyter notebook to prepare data, but they can take quite a while to run.
In [*]: print "hello"
df['expensive_col'] = df.apply(myfunc, axis=1)
It would be useful if myfunc would print status information such that I see how far into the execution it is. The downside of this is that it would seriously clutter the Jupyter output cell.
In [*]: print hello
df['expensive_col'] = df.apply(myfunc, axis=1)
hello
ix0
ix1
ix2
...
ix999
...
noisy output
...
Is there a way to print status updates from the long-running Jupyter cell in such a way to keep from cluttering the output cell?
For example, I could wipe everything printed by calling IPython.display.clear_output() but I might want to do a more targeted wipe, keeping stuff from before my expensive (hello, in the above example).
One simple thing you could do is to invoke the print function with the end parameter set to carriage return instead of newline, like this:
for i in range(100):
print('progress %i' % i, end='\r')
# things happen here
It effectively writes over the previous line, without cluttering the output field.
For a more advanced approach (and fancy looking progress bars!) check out the tqdm project.
I wrote a script analyzing perl-files (totally without PPI, because it will be used on Servers where the admins don't want PPI to be installed and so on and so forth, but let's not talk about that).
Now, let's say I have this code:
my $object = MySQL->new();
my $ob2 = $object;
$ob2->
(Where MySQL is one of our modules).
My script correctly identifies that $ob2 is a MySQL-Object and sees where it came from, and then returns a list of found subs in that module.
My idea was, that, since I use vim for editing, this could be a really cool way for "CTRL-n"-Completetion.
So, when...
$ob2->[CTRL-n]
It shows the CTRL-n-Box which opens my Perl-Script and gives it a few parameters (I would need: The line that I am actually on, the cursor position and the whole file as it is in vim).
I already found things like vim-perl, which allows me to write something like
if has('perl')
function DefPerl()
perl << EOF
use MyModule;
return call_to_my_function(); # returns all the methods from the object for example
EOF
endfunction
call DefPerl()
endif
But somehow this does not get executed (I tried writing something to a file with a system call just for the sake of testing)...
So, in short:
Does anyone here know how to achieve that? Calling a perl-function from vim by pressing CTRL-n with the full file-code and the line vim is actually in and the position, and then opening a completetion-menu with the results it got from the perl-script?
I hope someone knows what I mean here. Any help would be appreciated.
The details and tips for invoking embedded Perl code from Vim can be found in this Vim Tips Wiki article. Your attempts are already pretty close, but to return stuff from Perl, you need to use Vim's Perl API:
VIM::DoCommand "let retVal=". aMeaningfullThingToReturn
For the completion menu, your Perl code needs to return a List of Vim objects that adhere to the format as described by :help complete-items. And :help complete-functions shows how to trigger the completion. Basically, you define an insert-mode mapping that sets 'completefunc' and then trigger your function via <C-x><C-u>. Here's a skeleton to get your started:
function! ExampleComplete( findstart, base )
if a:findstart
" Locate the start of the keyword.
let l:startCol = searchpos('\k*\%#', 'bn', line('.'))[1]
if l:startCol == 0
let l:startCol = col('.')
endif
return l:startCol - 1 " Return byte index, not column.
else
" Find matches starting with a:base.
let l:matches = [{'word': 'example1'}, {'word': 'example2'}]
" TODO: Invoke your Perl function here, input: a:base, output: l:matches
return l:matches
endif
endfunction
function! ExampleCompleteExpr()
set completefunc=ExampleComplete
return "\<C-x>\<C-u>"
endfunction
inoremap <script> <expr> <Plug>(ExampleComplete) ExampleCompleteExpr()
if ! hasmapto('<Plug>(ExampleComplete)', 'i')
imap <C-x><C-z> <Plug>(ExampleComplete)
endif
I have been getting a very odd error when trying to print freeform text in a subroutine in Perl. Below is the code I am calling
print OUTFILE <<"HEADER";
The freeform text would go here
HEADER
The odd thing is that this only works in the main of my function. As soon as I place it in a function call, I get this error:
Can't find string terminator "HEADER" anywhere before EOF
Meaning it can't find the HEADER, even though it is there. Can you not use freeform text within a function (subroutine)?
Make sure that there is no space/tab/indentation before ending string identifier, that is HEADER. Your code should look like this:
function someFunc(){
print OUTFILE <<"HEADER";
The freeform text would go here
HEADER
}
Notice that there is no space/tab/indentation before HEADER there. It should start from first character of its line.
Check this tutorial out for more information:
Perl Here-Doc Tutorial
Quoting:
The important rule to remember is that
you finish a here-doc using the same
word you started, and it must be by
itself on the line
I am using vim to edit a shell script (did not use the right coding standard). I need to change all of my variables from camel-hum-notation startTime to caps-and-underscore-notation START_TIME.
I do not want to change the way method names are represented.
I was thinking one way to do this would be to write a function and map it to a key. The function could do something like generating this on the command line:
s/<word under cursor>/<leave cursor here to type what to replace with>
I think that this function could be applyable to other situations which would be handy. Two questions:
Question 1: How would I go about creating that function.
I have created functions in vim before the biggest thing I am clueless about is how to capture movement. Ie if you press dw in vim it will delete the rest of a word. How do you capture that?
Also can you leave an uncompleted command on the vim command line?
Question 2: Got a better solution for me? How would you approach this task?
Use a plugin
Check the COERCION section at the bottom of the page:
http://www.vim.org/scripts/script.php?script_id=1545
Get the :s command to the command line
:nnoremap \c :%s/<C-r><C-w>/
<C-r><C-w> gets the word under the cursor to command-line
Change the word under the cursor with :s
:nnoremap \c lb:s/\%#<C-r><C-w>/\=toupper(substitute(submatch(0), '\<\#!\u', '_&', 'g'))/<Cr>
lb move right, then to beginning of the word. We need to do this to get
the cursor before the word we wish to change because we want to change only
the word under the cursor and the regex is anchored to the current cursor
position. The moving around needs to be done because b at the
start of a word moves to the start of the previous word.
\%# match the current cursor position
\= When the substitute string starts with "\=" the remainder is interpreted as an expression. :h sub-replace-\=
submatch(0) Whole match for the :s command we are dealing with
\< word boundary
\#! do not match the previous atom (this is to not match at the start of a
word. Without this, FooBar would be changed to _FOO_BAR)
& in replace expressions, this means the whole match
Change the word under the cursor, all matches in the file
:nnoremap \a :%s/<C-r><C-w>/\=toupper(substitute(submatch(0), '\<\#!\u', '_&', 'g'))/g<Cr>
See 3. for explanation.
Change the word under the cursor with normal mode commands
/\u<Cr> find next uppercase character
i_ insert an underscore.
nn Search the last searched string twice (two times because after exiting insert mode, you move back one character).
. Repeat the last change, in this case inserting the underscore.
Repeat nn. until all camelcases have an underscore added before them, that is, FooBarBaz has become Foo_Bar_Baz
gUiw uppercase current inner word
http://vim.wikia.com/wiki/Converting_variables_to_camelCase
I am not sure what you understand under 'capturing movements'. That
said, for a starter, I'd use something like this for the function:
fu! ChangeWord()
let l:the_word = expand('<cword>')
" Modify according to your rules
let l:new_var_name = toupper(l:the_word)
normal b
let l:col_b = col(".")
normal e
let l:col_e = col(".")
let l:line = getline(".")
let l:line = substitute(
\ l:line,
\ '^\(' . repeat('.', l:col_b-1) . '\)' . repeat('.', l:col_e - l:col_b+1),
\ '\1' . l:new_var_name,
\ '')
call setline(".", l:line)
endfu
As to leaving an uncompleted command on the vim command line, I think you're after
:map ,x :call ChangeWord(
which then can be invoked in normal mode by pressing ,x.
Update
After thinking about it, this following function is a bit shorter:
fu! ChangeWordUnderCursor()
let l:the_word = expand('<cword>')
"" Modify according to your rules
let l:new_var_name = '!' . toupper(l:the_word) . '!'
normal b
let l:col_b = col(".")
normal e
let l:col_e = col(".")
let l:line = getline(".")
exe 's/\%' . l:col_b . 'c.*\%' . (l:col_e+1) .'c/' . l:new_var_name . '/'
endfu