presto | A Canvas based Music Notation system for the web
kandi X-RAY | presto Summary
kandi X-RAY | presto Summary
Presto is a Canvas based music notation system for the web. It only requires an HTML5 compliant browser. Presto is very much in alpha state, a lot of things are not supported yet. The purpose of Presto is to have an as readable as possible notation system for the web which excels at excerpts and which is able to display the notation of the given music nearly instantaneous. It takes the LilyPond notation system as main example, trying to come as close as possible to its elegance, but trying to never sacrifice speed in the process. Presto will therefore never be a complete notation system, but of course tries to come as close as possible. It uses the Lilypond Emmentaler font as a webfont for the best possible graphical result. As Presto is very much in active development, this document contains elements which are intended to be supported at some point but in the API description below is indicated whether a feature is implemented.
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Top functions reviewed by kandi - BETA
- Adds accidental notes
- Not a CSS class name
- Creates an object
- Cross - browser compat
- Creates a function for a and b
- a and b function
- Initialize the q
- Replaces all ancestor elements between a and b
- Calls a function
- execute callback function synchronously
presto Key Features
presto Examples and Code Snippets
Community Discussions
Trending Discussions on presto
QUESTION
I am trying to find a way to print the result taking into account if exists records in a table or not. If yes I should print all the records in a table, otherwise I should print only one record.
Example:
I have the Table Example:
ColA Colb ColCIf select count(*) from Example > 0 THEN Return
ColA Colb ColC 1 VA1 NULL 2 VB1 NULL 3 NULL VA2If select count(*) from Example <= 0 THEN Return
ColA Colb ColC Result NA NAIs it possible to do something like that? I am doing the development using PRESTO.
Thanks you in advance
...ANSWER
Answered 2022-Apr-04 at 08:49We could introduce a dummy/default row via a union, and then retain it only in the event of the Example
table being empty:
QUESTION
I have a table that I'm first trying to group based on unique column values (using dense_rank
) and then further group those items into batches of 5. Below is my table:
And below is what I'm trying to get:
video_id frame_id verb batch_of_five video_a frame_1 walk 1 video_a frame_2 run 1 video_a frame_3 sit 1 video_a frame_4 walk 1 video_a frame_5 walk 1 video_a frame_6 walk 2 video_b frame_7 stand 3 video_b frame_8 stand 3 video_b frame_9 run 3 video_b frame_10 run 3 video_b frame_11 sit 3 video_b frame_12 run 4 video_b frame_13 run 4Where each video_id
has a unique rank and each batch of 10 within each ranked video_id
has its own unique rank (and each batch of 10 overall has a unique id regardless of whether they belong to the same video_id
or not).
I'm able to group based on the video_id
column but am having trouble grouping those items further so that they are both in batches of 10 and unique across all video_ids
. I thought about using a group by clause but I'm trying to keep the other columns intact as well (verb
column).
Here is my presto query so far:
...ANSWER
Answered 2022-Feb-08 at 16:08Calculate frame rank (partition by video_id), divide by 6 (integer division) to get batch number in video_id partition. Then rank again to get absolute batch number:
QUESTION
I am migrating a query from Vertica to Presto(0.246). The query contains a Vertica function StringTokenizerDelim, which basically explodes and array (market column) into rows.
This is the mockup of the table:
...ANSWER
Answered 2022-Feb-09 at 10:49QUESTION
I have a table in presto with 2 columns: date
and value
.
I want to calculate the average of 2nd Quarter's values so the expected result should be: 15.
How can I do this in presto?
...ANSWER
Answered 2022-Jan-19 at 11:09You can divide month by 3 and group by the result:
QUESTION
Is there a way to use multiple WITH statements in Athena/Presto?
...ANSWER
Answered 2022-Jan-15 at 23:30have you tried with a as ( ) , b as () select * from a,b
?
QUESTION
I'm trying to calculate the City area size by using Geospatial Functions like the bing_tiles_around(), geometry_union(), and st_area() with the below sample data.
...ANSWER
Answered 2022-Jan-12 at 10:50bing_tiles_around
returns array of BingTile
while geometry_union
expects array of Geometry
so you need to transform one to another:
QUESTION
I tried a lot of code to remove .php
from url
for example - ht.abuena.net/presto.php
-> ht.abuena.net/presto
and vice versa - internally
ANSWER
Answered 2021-Dec-19 at 19:34With your shown samples, please try following htaccess rules file.
Please make sure to clear your browser cache before testing your URLs.
QUESTION
could you guys please help me creating a next and previous buttons ? I've been struggling because of my bad javascript . I saw some people use Jquery and almost all Javascript. I'm practicing Javascript so there are a lot of things I don't know. Thank you very much.
Wants: Next / Previous button to go to next page and go back page if users want to read again that page.
Link of my demo: https://jsfiddle. net/hioihia123/zgjswtay/3/
...ANSWER
Answered 2021-Dec-19 at 04:40Can you simply add the Previous
and Next
buttons at the footer or somewhere you'd prefer, and link to appropriate pages? Won't that be simple enough in your case?
QUESTION
we have a Hive Internal partitioned table which is existing from long time. recently we discovered that we need to change a column's name and datatype. also, we need to remove 3 duplicate records from the table. so we performed this step.
...ANSWER
Answered 2021-Dec-15 at 08:53Overwrite all partitions using Hive, like you did when removed duplicates. Some partitions remain not overwritten and causing error in Presto because the type inside ORC file and in Hive metadata is different. So, just try to overwrite partitions which you did not previously overwritten or overwrite all of them:
QUESTION
Here I've an array ["chair","desk","charger"], I'd like to check if a different array contains any the elements in the first array.
Example:
...ANSWER
Answered 2021-Dec-03 at 13:48Check cardinality of array returned by array_intersect(x, y) function.
Demo:
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