The Wiert Corner – irregular stream of stuff

Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Development’ Category

Cursor Movement in bash: either echo escape sequences or use tput

Posted by jpluimers on 2020/06/03

I read [WayBackCursor Movement earlier than [WayBack] Colours and Cursor Movement With tput and [WayBack] The Floating Clock Prompt.

So in one of my scripts I’ve now used an escape sequence, but I might change it to tput in a future version:

## Move one line up, then write finished scripts:
echo -e "\033[1A$finished\r"

I would probably have started with put if I had read [WayBack] bash – Set or change vertical position of the cursor – Stack Overflow first.

–jeroen

Posted in *nix, *nix-tools, bash, bash, Development, Power User, Scripting, Software Development | Leave a Comment »

Are there any static code analysis tools for Delphi/Pascal? – Stack Overflow

Posted by jpluimers on 2020/06/02

Still interesting question: [WayBack] Are there any static code analysis tools for Delphi/Pascal? – Stack Overflow

The basic problem here is that there is no formal language definition for the Delphi or Object Pascal language.

[WayBack] GitHub – RomanYankovsky/DelphiAST: Abstract syntax tree builder for Delphi (which also supports FreePascal and Lazarus) comes closest, and is used by FixInsight.

All other tools have more or less problems parsing various language constructs.

This starts with the built-in tooling that is based on [WayBack] Modeling Applications with Together which basically has not been maintained since the Delphi 2007 era.

Then there is for instance [WayBack] Code Healer Group CodeHealer for Delphi, but their [WayBack] Code Healer Group Forums – Index page have no messages since 2016.

Another wrapper around DelphiAST, is [WayBack] GitHub – MikhailIzvekov/DelphiSCA: Static code analysis tools for Delphi, which has a visual way to walk that AST. But it has not been maintained for years. The cool thing however, is that the AST is in sync with the code editor.

Finally, TestInsight uses DelphiAST to go to the right source code location.

–jeroen

Read the rest of this entry »

Posted in Delphi, Development, Software Development | 1 Comment »

SysUtils.pas Why parameters of these anonymous not const? TProc = …

Posted by jpluimers on 2020/06/02

At [WayBack] SysUtils.pas Why parameters of these anonymous not const? TProc = reference to procedure (Arg1: T1; Arg2: T2); TProc = reference … – Jacek Laskowski – Google+, Hallvard Vasbotn made this nail on the head comment:

It could have been solved if the const’ness had been seen as a implementation detail by the compiler (which it really is) and made const and non-const signatures assignment compatible.

It was changes like the above that I had hoped for when writing Source: 15 months later: what happened to Delphi Language Enhancements? « The Wiert Corner – irregular stream of stuff.

Now we are another 27 months later, so this again is a reminder to check what the compiler team (man?) has improved on the language side.

–jeroen

Posted in Delphi, Software Development, Development | 1 Comment »

How do I delete a Bash function? – Stack Overflow

Posted by jpluimers on 2020/06/02

I hardly do this, so I tend to forget that unset -f functionname deletes a function and unset variablename or unset -v variablename deletes a variable.

From:

I have done this:bash $ z() { echo ‘hello world’; }How do I get rid of it?

Source: [WayBackHow do I delete a Bash function? – Stack Overflow

Reference: [WayBack] unset Man Page – Bash – SS64.com

–jeroen

Posted in *nix, *nix-tools, bash, bash, Development, Power User, Scripting, Software Development | Leave a Comment »

GitHub – kzahel/web-server-chrome: An HTTP Web Server for Chrome (chrome.sockets API)

Posted by jpluimers on 2020/06/01

Cool: [WayBack] GitHub – kzahel/web-server-chrome: An HTTP Web Server for Chrome (chrome.sockets API)

This allows you to develop HTTP applications that live in Chrome:

[Archive.is1/Archive.is2Web Server for Chrome – Chrome Web Store: A Web Server for Chrome, serves web pages from a local folder over the network, using HTTP. Runs offline.

Of course you could to python -m SimpleHTTPServer 8888 or python -m http.server 8888, but this runs within chrome and can be used from inside JavaScript projects.

Features

  • serve local files
  • configure listening port
  • configure listening interface (e.g. localhost or all interfaces)
  • custom http handlers possible
  • websocket support available
  • works nice with chrome.runtime.onSuspend
  • options for autostart, start in background, etc etc.
  • handles range requests, HEAD, etc
  • options for CORS
  • optional PUT, DELETE request (for upload files)
  • sets MIME types
  • can render directory listing
  • See relevant options: https://github.com/kzahel/web-server-chrome/blob/master/polymer-ui/options.js

Via [WayBack] This is super useful: A# web #server that runs in #Chrome! Makes it super easy to do local web dev without the hassle of setting up a complex back end s… – Jason Mayes – Google+

–jeroen

Posted in Chrome, Development, Google, JavaScript/ECMAScript, Power User, Scripting, Software Development, Web Development | Leave a Comment »

 
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