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docs: re-written no-value policies #160

Merged
merged 5 commits into from
Nov 21, 2018
Merged

docs: re-written no-value policies #160

merged 5 commits into from
Nov 21, 2018

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akrzemi1
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ned14
ned14 requested changes Nov 14, 2018
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Very different style and approach to the preceding docs. It'll be interesting to see how people react! Otherwise lots of great stuff in there, thank you.

doc/src/content/motivation/narrow_contract.md Outdated Show resolved Hide resolved
doc/src/content/motivation/narrow_contract.md Outdated
```

The compiler can see that if `pi` is null, the program would have undefined
behavior. Since undefined behavior is never the programmers intention, the compiler
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Since undefined behaviour is required by the C++ standard to be never the programmer's intention

doc/src/content/motivation/narrow_contract.md
The compiler can see that if `pi` is null, the program would have undefined
behavior. Since undefined behavior is never the programmers intention, the compiler
assumes that apparently this function is never called with `pi == nullptr`. If so,
`j` is always `0` and the code can be transformed to a faster one:
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j is always nullptr

doc/src/snippets/policies.cpp Show resolved Hide resolved
@ned14 ned14 merged commit d879be5 into ned14:develop Nov 21, 2018
ned14 added a commit that referenced this pull request Nov 21, 2018
@ned14
Repair damage from bad merge of pr #160.
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@akrzemi1 @ned14