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 ‘Software Development’ Category

How to Send Emails with Gmail using Python

Posted by jpluimers on 2019/11/27

The cool thing about [WayBack] How to Send Emails with Gmail using Python is that it covers a broad range of email sending topics:

  • regular connections
  • secure connections
  • authenticating
  • rate limits
  • Google disallowing SMTP by default

Well wordt reading it, and the references:

–jeroen

Posted in Development, Python, Scripting, Software Development | Leave a Comment »

some links on bash and optional parameters

Posted by jpluimers on 2019/11/26

Hopefully I’ve been able to integrate some of the ideas in the links below in github.com/jpluimers/btrfs-du/blob/master/btrfs-du

One of the features I wanted there was to be able to add optional switches like --raw, --iec or --si to it similar to what as the btrfs qgroup show subcommand has.

It seems possible with bash, but it is not trivial, at least not for me as a non-frequent bash user, so here are some links to get me started:

In retrospect, other languages than bash might have been a better choice for a script like that (:

–jeroen

PS, some btrfs references:

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

GitHub – NickRing/Delphi-Shortcut-Finder: Shows/find keyboard short-cuts have be assigned, that may be conflicting.

Posted by jpluimers on 2019/11/26

Cool tool: [WayBackGitHub – NickRing/Delphi-Shortcut-Finder: Shows/find keyboard short-cuts have be assigned, that may be conflicting.

Via: [WayBack] I need some help from anyone who knows RTTI better than me. I’m writing an OTA tool to list all the actions or keybindings that are associated with a s… – David Hoyle – Google+

David has an excellent series of blog posts on writing experts around his tool [WayBack] IDE Explorer – Dave’s Development Blog.

–jeroen

Posted in Delphi, Development, Software Development | Leave a Comment »

Unorthodocs: Abandon your DVCS and Return to Sanity – bitquabit

Posted by jpluimers on 2019/11/21

Some interesting thoughts on DVCS: [WayBackUnorthodocs: Abandon your DVCS and Return to Sanity – bitquabit

Besides the very good point it raises about DVCS (Git, Mercurial and most other DVCSes treat the whole state of the repository as the atom) it also indicates quite a few shortcomings:

  • most people hardly ever need the full history to be off-line
  • having the full history means repositories get huge in size, including your off-line clone
  • pseudo-solutions for huge repository sizes – like git-LFS or git-annex – are a no-go because now you loose atomicity
  • huge repositories in file or commit counts make them slow, especially when the trees are deep
  • splitting up repositories isn’t a good idea either because again: you loose atomicity
  • all DVCS are hard, not just git, because they are distributed and full of features
  • the workflow for submitting pull requests is quite a bit longer than submitting a patch, even though merging in a DVCS can be hard too (despite atomicity which does help a lot for DVCS systems)

I see many other advantages of DVCS systems (for instance that you only need to locally have the branches you are interested in, way better tooling for DVCS systems, ditto for sites hosting DVCS), but it always a good thing to know the weak spots of what you are working with.

–jeroen

Posted in Development, DVCS - Distributed Version Control, git, Mercurial/Hg, Software Development, Source Code Management | Leave a Comment »

Scopes and names can really be deceiving. A classes in a hierarchy can have members with identical names…

Posted by jpluimers on 2019/11/21

Examples like the one below from [WayBack] Scopes and names can really be deceiving. A root class and a descendant class can both have public fields, properties and methods with the same name… – Lars Fosdal – Google+ used to be part of the “language day” during my 5 day Delphi introductory courses.

Maybe I should find back more of those from the days, brush them up a little, then post them in a repository.

The thread has some nice references to tools that give better warnings and comparisons with other languages.

Anyone wanting to assist with that?

Example code

Read the rest of this entry »

Posted in Delphi, Development, Software Development | Leave a Comment »

Any idea what exactly mean …licensed to test ??? My Delphi is…

Posted by jpluimers on 2019/11/20

Your Delphi “licensed to” might be totally different from what it is actually licensed to.

From [WayBack] Hello people, any idea what exactly mean …licensed to test ??? My Delphi is registered with a valid account, subscription, serial number and so on. – Dobrin Petkov – Google+, at least these sources might be used different from the actual licensee name:

  • the VLAN name
  • the Windows username of the one that installed it
  • the Windows licensee

–jeroen

Posted in Delphi, Development, Software Development | Leave a Comment »

git tag – How to delete a git remote tag? – Stack Overflow

Posted by jpluimers on 2019/11/20

When working with git, often the brevity of a solution is remarkable. Remembering how it can be so short is the hard part. An explanation why helps, for instance with [WayBackgit tag – How to delete a git remote tag? – Stack Overflow by markdorison.

He explains why you end up with:

git push --delete <origin> <tagname>

Here, <origin> is your remote, and <tagname> the tag to delete.

He explains other ways, which is done by [WayBackgist.github.com/mobilemind/7883996 as well:


# delete local tag '12345'
git tag -d 12345
# delete remote tag '12345' (eg, GitHub version too)
git push origin :refs/tags/12345
# alternative approach
git push –delete origin tagName
git tag -d tagName

–jeroen

Posted in Development, DVCS - Distributed Version Control, git, Software Development, Source Code Management | Leave a Comment »

[Delphi] Delphi JSON Reformatter (text or html output) – Pastebin.com

Posted by jpluimers on 2019/11/19

I might need this in the future from Delphi: [WayBack] [Delphi] Delphi JSON Reformatter (text or html output) – Pastebin.com

Via [WayBack] I wrote a function to make JSON more readable, and naturally I wonder if I missed something crucial so that it eventually will break? There are probabl… – Lars Fosdal – Google+

–jeroen

Posted in Delphi, Development, Software Development | Leave a Comment »

Return empty cell from formula in Excel – Stack Overflow

Posted by jpluimers on 2019/11/19

I never thought you could do it, but you can: [Archive.isReturn empty cell from formula in Excel – Stack Overflow.

You have to crate:

  • a VBA function
  • a reference to a range that evaluates the function so it returns blank
  • a cell with a function that blanks the cell using the range

Convoluted, but clever!

–jeroen

 

Posted in Development, Excel, Office, Office VBA, Power User, Software Development | Leave a Comment »

Angle brackets in markdowndown needs to be escaped

Posted by jpluimers on 2019/11/19

A few days after filing <path> disappears from "Preview" rendering and also from actual rendering (at least in issues), I realised that this is by intent: Markdown allows to [WayBack] inline html which means that code like below will be all treated as such:

<path>

> <path>

*<path>*

**<path>**

> *<path>*

> **<path>**

The solution is to either escape or quote with back-ticks:

`<path>`

> `<path>`

*`<path>`*

**`<path>`**

> *`<path>`*

> **`<path>`**

Since WordPress also is based on pseudo-HTML codes, it too needs escaping.
–jeroen

 

Posted in Development, Lightweight markup language, MarkDown, Power User, Software Development | Leave a Comment »