Posted by jpluimers on 2020/01/10
On my list of software to try: [WayBack] Commander One review: A superior alternative to Android File Transfer on Mac
Via: [WayBack] Looks like a must-have for anyone using a Mac (with MacOS) and an Android phone. – Roderick Gadellaa – Google+
–jeroen
Posted in Android, Android Devices, Apple, Development, iMac, Mac, Mac OS X / OS X / MacOS, MacBook, MacBook Retina, MacBook-Air, MacBook-Pro, MacMini, macOS 10.12 Sierra, macOS 10.13 High Sierra, Mobile Development, Software Development | Leave a Comment »
Posted by jpluimers on 2020/01/09
For my link archive: [WayBack] Getting the up to date project source code from the IDE – Dave’s Development Blog
It shows how to “using the IDE’s live files and if the IDE hasn’t got a file open, the file from disk”.
This gives you the same view the compiler in the IDE has.
Via [WayBack] Getting the up to date project source code from the IDE – David Hoyle – Google+
–jeroen
Posted in Delphi, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2020/01/09
On my list of things to play with: [WayBack] Joseph Redmon: How computers learn to recognize objects instantly | TED Talk | TED.com
It is about the super fast YOLO (You Only Look Once) engine that runs a full frame through a neural network performing object classification for all objects.
It can classify many frames per second.
More links on how to install it and get going:
–jeroen
Posted in Development, Software Development | Leave a Comment »
Posted by jpluimers on 2020/01/08
Sometimes simple examples are the best: [WayBack] Python – list transformation – Stack Overflow.
Interactive example (note you can run and save at repl.it in either [WayBack] Repl.it – Python 3 or [WayBack] Repl.it – Python 2; you can run but not save it at [WayBack] Welcome to Python.org: interactive Python shell):
# Links the documentation are Python 2, though everything works in Python 3 as well.
x = [1,2,3,4,5,11]
print("x: ", repr(x))
y = ['01','02','03','04','05','11']
print("y: ", repr(y))
# List comprehension https://docs.python.org/2/tutorial/datastructures.html#list-comprehensions
# ... using `str.format()` (Python >= 2.6): https://docs.python.org/2/library/stdtypes.html#str.format and https://docs.python.org/2/library/string.html#formatstrings
y = ["{0:0>2}".format(v) for v in x]
print("y: ", repr(y))
# ... using the traditional `%` formatting operator (Python < 2.6): https://docs.python.org/2/library/stdtypes.html#string-formatting y = ["%02d" % v for v in x] print("y: ", repr(y)) # ... using the format()` function (Python >= 2.6): https://docs.python.org/2/library/functions.html#format and https://docs.python.org/2/library/string.html#formatstrings
# this omits the "{0:...}" ceremony from the positional #0 parameter
y = [format(v, "0>2") for v in x]
print("y: ", repr(y))
# Note that for new style format strings, the positional argument (to specify argument #0) is optional (Python >= 2.7) https://docs.python.org/2/library/string.html#formatstrings
y = ["{:0>2}".format(v) for v in x]
print("y: ", repr(y))
# Using `lambda`
# ... Python < 3 return a list y = map(lambda v: "%02d" %v, x) print("y: ", repr(y)) # ... Python >= 3 return a map object to iterate over https://stackoverflow.com/questions/1303347/getting-a-map-to-return-a-list-in-python-3-x/1303354#1303354
y = list(map(lambda v: "%02d" %v, x))
print("y: ", repr(y))
Output:
Python 3 Python 2
–jeroen
Posted in Conference Topics, Conferences, Development, Event, Python, Scripting, Software Development | Leave a Comment »
Posted by jpluimers on 2020/01/08
Reminder to Self:
{The class used to catch attempts to execute a virtual method of a freed
object}
TFreedObject = class
public
procedure GetVirtualMethodIndex;
procedure VirtualMethodError;
{$ifdef CatchUseOfFreedInterfaces}
procedure InterfaceError;
{$endif}
end;
If you encounter the class TFreedObject when doing a cast, then you’re working on a freed object and have FastMM4 enabled to detect that.
Source: [WayBack] FastMM4/FastMM4.pas at master · pleriche/FastMM4 · GitHub; FastMM4 – A memory manager for Delphi and C++ Builder with powerful debugging facilities
Note that if you want to see the underlying FastMM data for any TObject allocation, use this watch (where Self is the current instance):
PFullDebugBlockHeader(PByte(Self) - SizeOf(TFullDebugBlockHeader))^
You can also put a ,r behind it to see the fields of this structure:
(Reserved1:nil; Reserved2:nil; AllocatedByRoutine:$41BF74; AllocationGroup:0; AllocationNumber:592682; AllocationStackTrace:(4224198, 4233131, 4235210, 11103806, 6552132, 131126, 6597961, 11106984, 4235210, 11107153, 11104090); AllocatedByThread:90428; FreedByThread:90428; FreeStackTrace:(4241541, 131126, 4235210, 11103806, 6552132, 131126, 6597961, 11106984, 4235210, 11107153, 11104090); UserSize:36; PreviouslyUsedByClass:132272; HeaderCheckSum:2673350594)
–jeroen
Posted in Conference Topics, Conferences, Delphi, Development, Event, Software Development | Leave a Comment »
Posted by jpluimers on 2020/01/08
As I will likely need this one day: [Archive.is / WayBack] Crosscompiling with Lazarus 1.8 on Linux Mint 18.3 | The Programming Works.
There are quite a few one-time manual setups to initially set this up, but after that it’s a piece of cake.
via:
There’s a lot to like about Lazarus. To automate building for multiple targets, a nice option is Build Modes and the menu option “Compile many Modes”. From command line, you can use
lazbuildwith--operating-system,--cpu, or--build-modeswitches.
–jeroen
Posted in Development, FreePascal, Lazarus, Pascal, Software Development | Leave a Comment »
Posted by jpluimers on 2020/01/07
[WayBack] Mads Kristensen on Twitter: “Visual Studio Tip: A blue dot in the margin indicates a switch of threads while stepping through debugging. #vstip… “
–jeroen
Posted in .NET, Development, Software Development, Visual Studio and tools | Leave a Comment »
Posted by jpluimers on 2020/01/07
In case I ever need a fading effect between 2 panels on one form, there is some code that will get me started.
I’d probably code it in a different design (without a global variable), but it works so can be a good source of ideas.
Source: Delphi/FadingEffect at master · tothpaul/Delphi · GitHub
Via: [WayBack] VCL Tiny demo of a Fading effect for Delphi Tokyo – Paul TOTH – Google+
–jeroen
Posted in Delphi, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2020/01/05
Given that I’m fighting rectal cancer and am extremely low on energy, I am keeping this much shorter than I want to.
Recently, I learned that Rudy Velthuis passed away on 2019-05-13. Born on 1960-10-30, he passed away at only age 58.
After asking permission from his family, I wrote a small im memoriam.
We frequently encountered each other on-line in the Delphi community, especially in the early days when I was way more active on forums, newsgroups and chat channels. He was famous there, with good reason.
Though colloquially known as [WayBack] “dentist with a strong interest in programming”, he was a great Delphi programmer and very well known for thoroughly documenting the many gaps that Embarcadero left in their documentation.
In 2009, Edwin van der Kraan and I had an opportunity to have dinner with Rudy. We met at his house, where we learned he not only ran a fully fledged dentistry practice, but also was married someone who origilally was from the Philippines. A truly happy couple they were.
In retrospect, I wish we had had met in real life more often, but I’m learning the hard way that life is finite giving you only so much time to do things.
I will remember Rudy because of his knowledge, wit and odd – but great – combination of work and interests.
In the mean time, I have asked a few archival organisations (including the WayBack machine) to archive his sites:
Some of his profiles that I archived on 20190103:
I love the “Kraftwerk – Autobahn” picture on his Stack Overflow profile page, so I included that song below the fold.
Related:
–jeroen
Posted in About, Delphi, Development, History, Personal, Software Development | 4 Comments »
Posted by jpluimers on 2020/01/02
list.sortsorts the list in place, i.e. it doesn’t return a new list. Just write
newList.sort()
return newList
The above answer is goden as performing return list.sort() bytes me often, because Python is usually an environment using the functional approach.
Answer from [WayBack] python – Why does “return list.sort()” return None, not the list? – Stack Overflow
Background information:
list.sort()
list.sort(cmp=None, key=None, reverse=False)- Sort the items of the list in place (the arguments can be used for sort customization, see
sorted()for their explanation).
list.sort()
list.sort(key=None, reverse=False)- Sort the items of the list in place (the arguments can be used for sort customization, see
sorted()for their explanation).
–jeroen
Posted in Development, Python, Scripting, Software Development | Leave a Comment »
The Wiert Corner - irregular stream of stuff 