fext | In today 's JavaScript
kandi X-RAY | fext Summary
kandi X-RAY | fext Summary
Fast explicit tail calls in JavaScript [live page] [Node.js package]. Classically, tail calls are automatically optimized (LISP...) . In JavaScript, programmers may well not know which "return" statements are optimized by the engine, and which not. This would lead to practical issues when debugging/optimizing (2009). As of 2018, progress is "slow" and the Chrome team has already removed the automatic self-recursion tail call optimization from its JavaScript engine. Another possibility is to explicitly mark the tail calls that will be optimized. Several JavaScript extensions were proposed that add new keywords to the language (2013, 2016). It turns out that we can do this with today's JavaScript, without extending the language.
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Community Discussions
Trending Discussions on fext
QUESTION
I am struggling to fix a bug in my code. The variable (fext) is only true for the last file in a folder. So if by chance the last file is 'jpg' then my code will continue as planned. But if by chance the last file is a 'gpx' or a 'csv' then the Else error will activate even though there is a 'jpg' file in the folder.
Can somebody please help me refine my code so that this work if all file types are in the folder? I am still quite new to Python and stuck on how to proceed.
Here is my code below:
...ANSWER
Answered 2021-Nov-24 at 22:16The fext and fname variables should return an iterable if you are to check against all extensions contained within the folder. Try the following list comprehensions.
QUESTION
I am trying to extract bunch of information from filenames using regular expressions in R. As I am matching the pattern, str_view() is showing me the correct set of strings. Yet, when I am trying to sub those and extract the remaining portion, it doesn't work. I also tried str_extract() but it isn't working. What am I doing wrong?
...ANSWER
Answered 2021-Oct-09 at 07:04Here is a simple approach using sub:
QUESTION
I'd like to first point out that english is not my first language and im a newbie tryna learn news things so i apologize if i might sound confusing.
So here it goes, im trying to make an image viewer for my local image files and i decided to try and make a "load more" button using jquery/ajax & php so it doesn't show all the files on the selected directory.
Here's my process.php:
...ANSWER
Answered 2021-Aug-23 at 04:08you get error in append because the data.imgs is array
in process.php change this:
QUESTION
so I am trying to pick a folder, select every photo, watermark it with an individual text and safe it in a different folder. I have watched a lot of YouTube Videos and googled a lot but I can't help it anymore... Im always getting error messages and I can't see why.
So my current code is:
...ANSWER
Answered 2021-Jan-22 at 17:57You're using string as an argument to ImageDraw.Draw(). Use i variable instead of f.
QUESTION
I am working on a web app (pure HTML/Javascript, no libraries) that does byte-level processing of a file (Huffman Encoding demo). It works beautifully (you do NOT want to know how long it took to get there), but my sense of completion is bothering me just a bit because I have to load the files to and from an ArrayBuffer instead of streaming from the HDD. There's also a filesize limitation, although it would admittedly take quite a long time to compress a 4GB file (the maximum that my data structures support).
Still, in the interest of making this app work on low-resource devices, how might I stream a file from a file input box (I need multiple passes for the frequency counting, filesize detection, and actual write) and to a browser download of some sort (that's in one pass at least, thankfully)?
Here are the relevant functions that handle it right now (I apologize for the globals :P):
...ANSWER
Answered 2020-Dec-01 at 07:37There is a streams API now already supported from the modern browsers in Javascript
QUESTION
I have folders in a directory named 2001,2002,2003,2004,2005. However when I iterate through them inside the 'for batch in batchno: print(batch)' It only prints the first one 2001. If I print the parameter "Batchno", it gives me all folders. IS there something breaking out of the loop that I am missing? I read that a return can break out of your loop, not sure if "return filename" is doing that.
...ANSWER
Answered 2020-Nov-20 at 14:30Absolutely! It's hitting your return at the end of the first iteration of the for loop
If I'm interpreting what you're attempting to do correctly, you can simply remove the return and your code should run fine
QUESTION
I am writing a set of tools to crack Vigenere cipher for a school project. There is a problem that I know I can solve if I could pass pointers like in C but I started this in Python and I don't want to rewrite everything. Code is on https://github.com/DarkFireGuy/cracking-vigenere if you want to see
The Problemfreq_analysis.py has a function _plot() that is used to plot and save the image. After pyplot has created the graph I check to see if the file has an extension. If it doesn't then I call simple_popup() from tools.py (small collection of nifty little functions). This call sends three pieces of information to a function that makes it easier for me to simplify tkinter use:
- A message to tell the user that the file name is bad and doesn't have an extension,
- Button labels to tell the user which one does what.
- Functions to tell each button what they're supposed to do.
If the user presses the button to enter a new name I would call simple_popup_input() (not written yet) to take the new input. But I cannot do that until I figure out how I would get the input into the fext (file extension). For now I am using exec to take user input and putting it into fext (txt on cml no fancy pants tkinter yet) but this fext is not the same fext from before. To fix all of this I need to be to write to the address at which fext is located. Google told me it wasn't possible in python so I have come to the council of smart people to see what I should do.
Rewrite the whole thing in C
Figure out how to get the memory address of
fext(just came to me while writing this) write the new file extension to a temporary file and then read it after the
simple_popup_input()call --- Don't want to do this because there has be a more elegant solutionDon't know how it would work but to include two tuples which will contain arguments that get passed into
...func1andfunc2.simple_popupheader would become:
ANSWER
Answered 2020-Nov-16 at 22:37You are asking the wrong question. Your question should be "Is there a better way to do this?". There is. Use a messagebox.
QUESTION
This is really driving me insane. The following is part of an 8,000 line batch script. This section of code is at line 3380 approx and not working for me, as the fext variable is not getting set.
Apologies for the long post.
...ANSWER
Answered 2020-Sep-29 at 12:18IF EXIST "%LOCALAPPDATA%\Microsoft\Windows\Fonts\%font%" exit /b
IF EXIST "%WINDIR%\Fonts\%font%" exit /b
Set "fext=%font:~-3%"
IF "%fext%"=="" Echo null extension for font "%font%"
IF /i "%fext%"=="ttf" Set ftype=Truetype
IF /i "%fext%"=="otf" Set ftype=Opentype
Echo %time% Installing "%font%" to "%LOCALAPPDATA%\Microsoft\Windows\Fonts" >>C:\%USERDOMAIN%.PostInstall.Log 2>&1
Echo %time% Processing font "%font%" Extension: %fext% Type: "(%ftype%)" >>C:\%USERDOMAIN%.PostInstall.Log 2>&1
echo "%font%" "%fext%" "%ftype%"
Pause
copy "%SrcPath%\Fonts\%font%" "%LOCALAPPDATA%\Microsoft\Windows\Fonts" /y >>C:\%USERDOMAIN%.PostInstall.Log 2>&1
REG ADD "HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Fonts" /v "%font% (%ftype%)" /d "%LOCALAPPDATA%\Microsoft\Windows\Fonts\%font%" /t REG_SZ /f >>C:\%USERDOMAIN%.PostInstall.Log 2>&1
exit /b
QUESTION
I have a problem with listdir(). I'm trying to change format of jpg files listed in a dir and i have this traceback. Here my code :
...ANSWER
Answered 2020-Aug-29 at 13:12You try to open 'yo.jpg' in your root directory but you get your filenames from the 'path' directory. Try to change line 11 to:
QUESTION
In c++, is there a way to see if a variable is equal to one of the values? Right now I have to do
...ANSWER
Answered 2020-Jul-27 at 16:29Example with a set:
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