Posted by jpluimers on 2019/04/25
Since I need this one day: [WayBack] Does anyone have the source from the book: The Tomes of Delphi: Algorithms and Data Structures by Julian Bucknall? – John Kouraklis – Google+
–jeroen
Posted in Delphi, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2019/04/25
Yes, occasionally, people still use DVD or CD disks, so thanks [Archive.is] Chris Bensen: macOS How to create an ISO from a CD or DVD:
Put in your CD or DVD, Open Terminal, type:
ls /VolumesFind the volume in the list, then type where
/path/to/volumeis the CD or DVD you want:
hdiutil makehybrid -iso -joliet -o Image.iso /path/to/volume
–jeroen
Posted in *nix, Apple, Mac, Mac OS X / OS X / MacOS, MacBook, MacBook Retina, MacBook-Pro, macOS 10.12 Sierra, Power User | Leave a Comment »
Posted by jpluimers on 2019/04/25
I totally forgot that Firebird as of 2.5 supports [WayBack] UPDATE OR INSERT, so as a reminder to self:
UPDATE OR INSERT INTO
{target} [({column_list})]
VALUES ({value_list})
[MATCHING ({column_list})]
[RETURNING {values} [INTO {variables}]]
{column_list} ::= colname [, colname ...]
{value_list} ::= value [, value ...]
{ret_values} ::= ret_value [, ret_value ...]
{variables} ::= varname [, varname ...]
–jeroen
Posted in Database Development, Development, Firebird | Leave a Comment »
Posted by jpluimers on 2019/04/24
I have seen this happen before, but it seems to be a habit on the Quality Portal: getting rid of bugs by marking them as “new feature”:
[WayBack] I’m using THTTPClient.BeginGet() to create an async get request to a webservice that holds a connection open until it has data to return (sort of like a… – Brian Ford – Google+. which basically was another person finding out about [RSP-20827] THTTPClient request can not be canceld – Embarcadero Technologies, which got marked (a month after submission!) as “Issue is reclassified as ‘New Feature'”.
I get why it happens (there was something exposed, but some of the functionality is missing a feature which needs to be added).
Marking it as such however sends the wrong signal to your users: we do not see bugs as bugs, so they get on the “new feature” pile with no estimate on when the feature will be done.
–jeroen
Posted in Delphi, Development, Issue/Bug tracking, Software Development | Leave a Comment »
Posted by jpluimers on 2019/04/24
A few years ago, Firefox changed the default “network.http.response.timeout” value from zero to 300 seconds (5 minutes).
Display style systems that show refreshing web pages, this can be a problem as when the connection to the web-server is unavailable for more than 5 minutes, then the page will show “The connection has timed out” and stop refreshing.
The solution – apart from fixing each and every connection problem – is to either restore the value or make it very long:
network.http.response.timeout=0network.http.response.timeout=30000Changing this works similarly like in A way to skip the Firefox “Well, this is embarrassing” during a sudden reboot « The Wiert Corner – irregular stream of stuff:
about:config in the addressbar
Confirm theThis might void your warranty!I accept the risk!network.http.response.timeoutdefault value 0 to the user set value 0–jeroen
Via:
ffprofile = webdriver.FirefoxProfile()
ffprofile.set_preference("network.http.response.timeout", 30000) #replace 30000 with the number of seconds you want the max delay to be
browser = webdriver.Firefox(firefox_profile=ffprofile)
Posted in Development, Firefox, Power User, Scripting, Software Development, Web Browsers, Web Development | Leave a Comment »
Posted by jpluimers on 2019/04/24
Interesting use of OpenCV: archiving the web comics.
–jeroen
Posted in Development, Software Development | Leave a Comment »
Posted by jpluimers on 2019/04/23
Since I get this question every now and then: [WayBack] Should you convert your Visual Basic .NET project to C#? Why and why not… | Tim Anderson’s IT Writing.
Via [WayBack] Should you convert your Visual Basic .NET project to C#? Why and why not… https://www.itwriting.com/blog/11089-should-you-convert-your-visual-basic-net-… – Ondrej Kelle – Google+
–jeroen
Posted in .NET, C#, C# 6 (Roslyn), Development, Software Development, VB.NET | Leave a Comment »
Posted by jpluimers on 2019/04/23
On my research list: [WayBack] Event Sourcing
Capture all changes to an application state as a sequence of events.
I got there via a very interesting thread [WayBack] A foreword===Hello everybody, the two major things that were recently introduced into my software architecture which led to significantly better main… – Edwin Yip – Google+
–jeroen
Posted in Design Patterns, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2019/04/23
I was a bit baffled at the below results because in other other databases.
You need to use this kind of notation ####.0E0 to force an integer to be evaluated as floating point, which is an extra .0 than explained by [WayBack] sql – Why does Firebird truncate decimal places when dividing? – Stack Overflow
I’m not the only person confused by this: [WayBack] [#CORE-2849] Simple mathematics gone wrong – Firebird RDBMS Issue Tracker.
I know that as of Firebird 2.1 you can use the [WayBack] dateadd() function for calculations on timestamps, date or time values (hence the confusing name dateadd), but you don’t always have the delta readily available in one unit (second, minutes, etc) and for a mixed Firebird/InterBase deployment having one kind of logic is often preferred.
select
cast('now' as timestamp) as NowTimeStamp
, (15.0*(1.0/24.0/60.0)) as A15MinutesInDays
, (15.0/24.0/60.0) as B15MinutesInDays
, (15.0E0/24/60) as C15MinutesInDays
, cast('now' as timestamp) + (15.0*(1.0/24.0/60.0)) as AIn15MinutesTimeStamp
, cast('now' as timestamp) - (cast('now' as timestamp) + (15.0*(1.0/24.0/60.0))) as ADifferenceInDays
, (cast('now' as timestamp) - (cast('now' as timestamp) + (15.0*(1.0/24.0/60.0)))) * 24 as ADifferenceHours
, (cast('now' as timestamp) - (cast('now' as timestamp) + (15.0*(1.0/24.0/60.0)))) * 24*60 as ADifferenceMinutes
, cast('now' as timestamp) + (15.0/24.0/60.0) as BIn15MinutesTimeStamp
, cast('now' as timestamp) - (cast('now' as timestamp) + (15.0/24.0/60.0)) as BDifferenceDays
, (cast('now' as timestamp) - (cast('now' as timestamp) + (15.0/24.0/60.0))) * 24 as BDifferenceHours
, (cast('now' as timestamp) - (cast('now' as timestamp) + (15.0/24.0/60.0))) * 24*60 as BDifferenceMinutes
, cast('now' as timestamp) + (15.0E0/24/60) as CIn15MinutesTimeStamp
, cast('now' as timestamp) - (cast('now' as timestamp) + (15.0E0/24/60)) as CDifferenceDays
, (cast('now' as timestamp) - (cast('now' as timestamp) + (15.0E0/24/60))) * 24 as CDifferenceHours
, (cast('now' as timestamp) - (cast('now' as timestamp) + (15.0E0/24/60))) * 24*60 as CDifferenceMinutes
-- Firebird 2.1 and up: use dateadd , dateadd(minute, 15, cast('now' as timestamp)) as DIn15MinutesTimeStamp , cast('now' as timestamp) - dateadd(minute, 15, cast('now' as timestamp)) as DDifferenceInDays , (cast('now' as timestamp) - dateadd(minute, 15, cast('now' as timestamp))) * 24 as DDifferenceHours , (cast('now' as timestamp) - dateadd(minute, 15, cast('now' as timestamp))) * 24*60 as DDifferenceMinutes from rdb$database /* Transposed results are below. Excected values for: A15MINUTESINDAYS 0.0104166666666667 B15MINUTESINDAYS 0.0104166666666667 Transposed results: NOWTIMESTAMP 20-9-2017 20:31:40 A15MINUTESINDAYS 0 B15MINUTESINDAYS 0.01 C15MINUTESINDAYS 0.0104166666666667 AIN15MINUTESTIMESTAMP 20-9-2017 20:31:40 ADIFFERENCEINDAYS 0 ADIFFERENCEHOURS 0 ADIFFERENCEMINUTES 0 BIN15MINUTESTIMESTAMP 20-9-2017 20:46:04 BDIFFERENCEDAYS -0.01 BDIFFERENCEHOURS -0.24 BDIFFERENCEMINUTES -14.4 CIN15MINUTESTIMESTAMP 20-9-2017 20:46:40 CDIFFERENCEDAYS -0.010416667 CDIFFERENCEHOURS -0.250000008 CDIFFERENCEMINUTES -15.00000048 DIN15MINUTESTIMESTAMP 20-9-2017 20:46:40 DDIFFERENCEDAYS -0.010416667 DDIFFERENCEHOURS -0.250000008 DDIFFERENCEMINUTES -15.00000048 */
–jeroen
Posted in Database Development, Development, Firebird, Software Development | Leave a Comment »
Posted by jpluimers on 2019/04/22
I had my ScanSnap ix500 – on which I wrote before – connected to a WiFi network that supported 2.4GHz and 5GHz.
Since there is too much trouble on the 2.4GHz band (too many access points around me running at too much power, and having even more trouble around meal times, so likely one or more badly shielded Microwave devices in the neighbourhood) I turned it off in my WiFi access points.
Now the ScanSnap ix500 would not scan any more (:
These links confirm my finding:
Now I have a separate access point indicating it is 2.4Ghz, so I had to use the Wireless Configuration Tool (which requires a USB connection to the ix500) to reconfigure it.
–jeroen
Posted in Fujitsu ScanSnap, Hardware, ix500, Power User, Scanners | Leave a Comment »
The Wiert Corner - irregular stream of stuff 