Articles by john morrison leon (Articles: 13)

Articles: 13

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Average article rating: 4.76

Desktop Programming
MFC	Smart observers to use with unique_ptr 18 Sep 2015 Updated: 18 Sep 2015 Rating: 4.77/5 Votes: 14 Popularity: 5.31 Licence: CPOL Views: 20,863 Bookmarked: 25 Downloaded: 203 Please Sign up or sign in to vote. observer_ptr, a smart observer guaranteed to always be either valid or test as null. Transparently harnessing unique_ptr's custom deleter feature to detect object destruction.
WTL	Windows dialog design in C++ without dialog templates. 29 May 2015 Updated: 3 Jun 2015 Rating: 4.96/5 Votes: 65 Popularity: 8.86 Licence: CPOL Views: 96,958 Bookmarked: 103 Downloaded: 4,409 Please Sign up or sign in to vote. An alternative approach in which dialogs are entirely specified as C++ code that requires neither IDE support to be written nor IDE generated resources to be executed. Powered by the C++ type system.
	XONOR pointers: eXclusive Ownership & Non Owning Reference pointers 14 May 2008 Updated: 14 Apr 2014 Rating: 4.96/5 Votes: 46 Popularity: 8.11 Licence: CPOL Views: 126,205 Bookmarked: 88 Downloaded: 691 Please Sign up or sign in to vote. A smart pointer system for safe application development in C++.
Programming Languages
C++	C++ references - not as safe as houses, but they can be optimal 18 Nov 2012 Updated: 18 Nov 2012 Rating: 3.50/5 Votes: 8 Popularity: 3.16 Licence: CPOL Views: 38,284 Bookmarked: 13 Downloaded: 0 Please Sign up or sign in to vote. A brief excursion into practical contexts in which C++ references can be used effectively with discussion of the dangers in using them.
	C++ references, some clarity on use and safety. 30 Apr 2014 Updated: 5 May 2014 Rating: 4.68/5 Votes: 18 Popularity: 5.87 Licence: CPOL Views: 29,451 Bookmarked: 30 Downloaded: 0 Please Sign up or sign in to vote. Some clear criteria for choosing when to use C++ references and how to know when they are safe.
	Smart pointers for single owners and their aliases 13 Nov 2012 Updated: 14 Apr 2014 Rating: 4.82/5 Votes: 12 Popularity: 5.20 Licence: CPOL Views: 37,111 Bookmarked: 56 Downloaded: 377 Please Sign up or sign in to vote. The missing link for complete memory and pointer safety in C++
	A Sensible Smart Pointer Wrap for Most of Your Code 25 Mar 2014 Updated: 30 Apr 2014 Rating: 4.68/5 Votes: 10 Popularity: 4.47 Licence: CPOL Views: 42,134 Bookmarked: 40 Downloaded: 369 Please Sign up or sign in to vote. Introducing smart observers of single owners and the concept of Public and Private scope visibility
	ptr_to_unique<T>, extending std::unique_ptr to support weak secondary smart pointers 21 Nov 2021 Updated: 15 Dec 2021 Rating: 5.00/5 Votes: 8 Popularity: 4.52 Licence: CPOL Views: 13,631 Bookmarked: 11 Downloaded: 196 Please Sign up or sign in to vote. A smart pointer to an object already owned by a unique_ptr. It doesn't own the object but it self zeroes when the object is deleted so that it can never dangle.
	Smart Numeric Casts to End the Agony of (int)... or static_cast<int>(...) 18 Apr 2022 Updated: 18 Apr 2022 Rating: 4.83/5 Votes: 11 Popularity: 4.61 Licence: CPOL Views: 10,610 Bookmarked: 12 Downloaded: 54 Please Sign up or sign in to vote. Smart numeric conversion casts that resolve the issue of should I write (int) or a static_cast by being a better choice than both
	number_cast<To, From> and Named Smart Casts 6 May 2022 Updated: 6 May 2022 Rating: 5.00/5 Votes: 7 Popularity: 4.23 Licence: CPOL Views: 4,521 Bookmarked: 3 Downloaded: 69 Please Sign up or sign in to vote. A more descriptive and tightly scoped cast for numeric conversions. Includes rounding options, overflow checks, a high resilience to coding errors and some special syntactical conveniences.
C++11	Units and measures for C++ 11 24 May 2017 Updated: 24 May 2017 Rating: 4.95/5 Votes: 22 Popularity: 6.64 Licence: CPOL Views: 45,188 Bookmarked: 18 Downloaded: 919 Please Sign up or sign in to vote. Type quantities according to the units in which they are measured. A complete implementation of units of measurement as a data type for C++ 11.
	'Class methods' for plain arrays and std::array and vector too. 4 Jan 2018 Updated: 4 Jan 2018 Rating: 4.78/5 Votes: 9 Popularity: 4.56 Licence: CPOL Views: 9,091 Bookmarked: 7 Downloaded: 88 Please Sign up or sign in to vote. Class method emulation for plain arrays plus unified handling of plain arrays, std::arrays and std::vectors
VC++	Units of measurement types in C++. Using compile time template programming. 12 Sep 2014 Updated: 8 Dec 2014 Rating: 4.95/5 Votes: 26 Popularity: 7.01 Licence: CPOL Views: 74,899 Bookmarked: 43 Downloaded: 601 Please Sign up or sign in to vote. A lightweight library allowing diverse unit types, seamless implicit scaling between them and the ability to work efficiently with multiple factor-less base unit systems (e.g. MKS and cgs).

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john morrison leon

Retired

Spain

Software Author with engineering, science and mathematical background.

Many years using C++ to develop responsive visualisations of fine grained dynamic information largely in the fields of public transport and supply logistics. Currently interested in what can be done to make the use of C++ cleaner, safer, and more comfortable.