Archive for the ‘Development’ Category
Posted by jpluimers on 2016/10/11
Interesting, as I thought Mac OS X Yosemite and up – having Python installed – would also keep Python up-to-date, but they don’t.
Hence:
Installing Python on Mac OS X
The latest version of Mac OS X, Yosemite, comes with Python 2.7 out of the box.
…
The version of Python that ships with OS X is great for learning but it’s not good for development. The version shipped with OS X may be out of date from the official current Python release, which is considered the stable production version.
–jeroen
via:
Posted in Development, Python, Scripting, Software Development, xCode/Mac/iPad/iPhone/iOS/cocoa | Leave a Comment »
Posted by jpluimers on 2016/10/11
Source: Version 1.8.1 History | Continua CI – v1.8.1.118
v1.8.1.118
October 10th, 2016
Changes
- Update: Reduced CPU usage on server when using a large number of time triggers.
- Update: Reduced wait time between time triggers running simultaneously.
- Update: Reduced CPU usage and throughput of stage queue.
- Update: The >> operator is now implemented in repository rules. This is used to clean the destination folder before copying files. It is useful when a stage can run on the same agent as a previous stage as the agent workspace is not automatically cleared between stages.
Note: We have also changed the default workspace and repository rules so that the >> operator is used for any server to agent rules in new stages. This is to ensure that the workspace is always cleared and are no surprises dependent on the agent the stage runs on. This can be changed to a single > to use the previous behaviour.
- Update: Environment variables now expanded in all path type property collectors. This will for example allow you to use %HOME% to define the path to check when using a Path Access PlugIn property collector.
- Update: Added descriptions and help information to property collector dialog fields.
- Update: Queued stages are now prevented from starting in the few seconds after an agent has gone offline.
- Fix: Issue where changes to user group membership were not picked up for several minutes unless the service was restarted.
- Fix: Triggers were not being monitored after a disabled configuration was re-enabled.
- Fix: Issue where agents with unlimited concurrent stages would not be selected to run stage.
–jeroen
Posted in Continua CI, Continuous Integration, Development, Software Development | Leave a Comment »
Posted by jpluimers on 2016/10/06
Allen Bauer (ex Delphi R&D team) wrote the brilliant piece about a year and a half ago. We can still dream, right?
Allen Bauer, May 25, 2015
Current working theory of Nullable<T>.
Nullable<T> = record
…
property Value: T read FValue; default;
…
end;
Using the default directive to “hoist” the operators of “T“. Currently the default directive only works for array properties by “hoisting” the ‘[]‘ operator. Marking a non-array property with default will make the containing type behave as that type.
This, coupled with some intrinsic compiler knowledge of the Nullable<T> type will make Nullable<T> work without any addition of keywords or other standard functions or procedures.
Using the “default” directive on a non-array property will work for any type, except for having the null-propagation semantics.
When considering language features, I try and not only make it work for the intended purpose, but also broaden reach of any supporting feature. In the above scenario, even user-defined operators on “T” will be properly hoisted and used.
This was part of a very interesting G+discussion at Delphi’s New Feature Desired: Nullable Types and Null Propagation….
It covered topics like these:
–jeroen
Posted in Delphi, Development, Software Development | 5 Comments »
Posted by jpluimers on 2016/10/06
DotPeek offline installers are available:
They are loacated on this page, as ‘Other distribution options’: http://www.jetbrains.com/decompiler/download/
–jeroen
via Offline Installer :: JetBrains Developer Community.
Posted in .NET, C#, Development, Reflection, Software Development | Leave a Comment »
Posted by jpluimers on 2016/10/05
Oh nice System.SysUtils.TCardinalHelper.Parse:
class function TCardinalHelper.Parse(const S: string): Cardinal;
begin
Result := StrToInt(S);
end;
Which means you get this nice EConvertError with message ''4294967295' is not a valid integer value'. with this simple test (which doesn’t even reach the Assert):
uses
System.SysUtils;
procedure Cardinal_Parse_High_Cardinal_Succeeds();
var
Expected: Cardinal;
Value: string;
Actual: Cardinal;
begin
Expected := High(Cardinal);
Value := Expected.ToString();
Actual := Cardinal.Parse(Value);
Assert(Expected = Actual);
end;
So I write some unit tests (see below) of which helpers for these types fail in one way or the other:
- Cardinal
- NativeUInt
- Single
- Double
- Extended
These work for the boundary cases:
- SmallInt
- ShortInt
- Integer
- Int64
- NativeInt
- Byte
- Word
- UInt64
- Boolean
- ByteBool
- WordBool
- LongBool
–jeroen
via: Oh nice, in System.SysUtils: “` class function TCardinalHelper.Parse(const…
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Posted in Delphi, Delphi 10 Seattle, Delphi 10.1 Berlin (BigBen), Delphi XE4, Delphi XE5, Delphi XE6, Delphi XE7, Delphi XE8, Development, Software Development | 5 Comments »
Posted by jpluimers on 2016/10/05
Fails in Delphi XE8 with a nice [dcc32 Fatal Error] dcc32_F2084_C2359.dpr(27): F2084 Internal Error: C2359
It is fixed in Delphi 10.0 Berlin, but of course a C2359 search does not reveal that as Quality Portal is behind a wall. So for future reference the bug: [RSP-13471] Int64 for loops can generate Internal Compiler Error – Embarcadero Technologies. Thanks +Stefan Glienke for mentioning the issue.
program dcc32_F2084_C2359;
type
TNumber = Int64; // UInt64; // fails too; other numeric types do not fail. Fails in a unit as well.
TNumbers = TArray;
TNumberRange = record
strict private
function GetLowerBound: TNumber;
public
function Numbers: TNumbers;
property LowerBound: TNumber read GetLowerBound;
end;
{ TNumberRange }
function TNumberRange.GetLowerBound: TNumber;
begin
Result := Default(TNumber);
end;
function TNumberRange.Numbers: TNumbers;
var
lValue: TNumber;
begin
for lValue := LowerBound to LowerBound do
;
end;
begin
end.
–jeroen
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Posted in Delphi, Delphi XE8, Development, F2084, Software Development | 1 Comment »
Posted by jpluimers on 2016/10/04
Slay dragons, learn concurrency! Play the cunning Scheduler, exploit flawed programs and defeat the armies of the Parallel Wizard.
Source: The Deadlock Empire
Via: Face the dragon. Learn the ropes of concurrent programming. – Lars Fosdal – Google+
Source code is available and focuses on C#; maybe one day I’ll make a Delphi version: deadlockempire/deadlockempire.github.io: The Deadlock Empire: Slay dragons, learn concurrency!
BTW: a great book (with nice illustrations at both github and kernel.org) is Source: Is Parallel Programming Hard, And, If So, What Can You Do About It? [WayBack]
–jeroen
Posted in .NET, C#, Delphi, Development, Multi-Threading / Concurrency, Software Development | Leave a Comment »
Posted by jpluimers on 2016/10/04
A while ago (in fact more than a year), I posted Encoding is hard… go G+ with the below picture.
[Wayback] ftfy (“fixes text for you”, a parody on “fixed that for you”) [Wayback] fixes it, but:
How did the single quote become “’“?
Actually, because of a a common “beautification” of many Office suites (Microsoft and Open alike), the single quote was a special one: a Unicode Character ‘RIGHT SINGLE QUOTATION MARK’ (U+2019) which in UTF-8 is encoded as 0xE2 0x80 0x99.
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Posted in Development, Encoding, ftfy, ISO-8859, ISO8859, Mojibake, Software Development, Unicode, UTF-8, UTF8, Windows-1252 | Leave a Comment »
The Wiert Corner - irregular stream of stuff 