rights reserved.© 2024 Bloomberg Finance L.P. All rights reserved. Designing a Slimmer Vector of Variants CppCon 2024 September 18, 2024 Chris Fretz Senior C++ Engineer 2© 2024 Bloomberg Finance L.P code • Original motivating use-case was modeling a time series of market events as a vector of variants, where one of the types in the variant happened to be 10x larger than the rest. 4© 2024 Bloomberg operator [] • This is extremely unfortunate, but is an inevitable outcome of not actually storing variants inside the vector • Could theoretically work around this by returning a proxy class, but this seems

source string feedback, Source strings reviews, Enable source reviews Variants Variants are used to group different length variants of the string. The frontend of your project can then use different strings strings depending on the screen or window size. See also String variants, Variants Labels Labels are used to categorize strings within a project to further customize the localization workflow (for example all languages. See also Customizing behavior using flags Variants Variants are a generic way to group strings together. All term variants are listed in the glossary sidebar when translating. Hint

source string feedback, Source strings reviews, Enable source reviews Variants Variants are used to group different length variants of the string. The frontend of your project can then use different strings strings depending on the screen or window size. See also String variants, Variants Labels Labels are used to categorize strings within a project to further customize the localization workflow (for example all languages. See also Customizing behavior using flags Variants Variants are a generic way to group strings together. All term variants are listed in the glossary sidebar when translating. Hint

source string feedback, Source strings reviews, Enable source reviews Variants Variants are used to group different length variants of the string. The frontend of your project can then use different strings strings depending on the screen or window size. See also String variants, Variants Labels Labels are used to categorize strings within a project to further customize the localization workflow (for example all languages. See also Customizing behavior using flags Variants Variants are a generic way to group strings together. All term variants are listed in the glossary sidebar when translating. Hint

source string feedback, Source strings reviews, Enable source reviews Variants Variants are used to group different length variants of the string. The frontend of your project can then use different strings strings depending on the screen or window size. See also String variants, Variants Labels Labels are used to categorize strings within a project to further customize the localization workflow (for example all languages. See also Customizing behavior using flags Variants Variants are a generic way to group strings together. All term variants are listed in the glossary sidebar when translating. Hint

a fixed set of values, and those values are called the enum’s variants. Chapter 6 will cover enums in more detail. For Result, the variants are Ok or Err. Ok indicates the operation was successful, and :cmp::Ordering into scope from the standard library. Ordering is another enum, like Result, but the variants for Ordering are Less, Greater, and Equal. These are the three outcomes that are possible when you handling the error. Remember that parse returns a Result type, and Result is an enum that has the variants Ok or Err. We’re using a match expression here, like we did with the Ordering result of the cmp

source string feedback, Source strings reviews, Enable source reviews Variants Variants are used to group different length variants of the string. The frontend of your project can then use different strings strings depending on the screen or window size. See also String variants, Variants Labels Labels are used to categorize strings within a project to further customize the localization workflow (for example all languages. See also Customizing behavior using flags Variants Variants are a generic way to group strings together. All term variants are listed in the glossary sidebar when translating. Hint

source string feedback, Source strings reviews, Enable source reviews Variants Variants are used to group different length variants of the string. The frontend of your project can then use different strings strings depending on the screen or window size. See also String variants, Variants Labels Labels are used to categorize strings within a project to further customize the localization workflow (for example all languages. See also Customizing behavior using flags Variants Variants are a generic way to group strings together. All term variants are listed in the glossary sidebar when translating. Hint

source string feedback, Source strings reviews, Enable source reviews Variants Variants are used to group different length variants of the string. The frontend of your project can then use different strings strings depending on the screen or window size. See also String variants, Variants Labels Labels are used to categorize strings within a project to further customize the localization workflow (for example all languages. See also Customizing behavior using flags Variants Variants are a generic way to group strings together. All term variants are listed in the glossary sidebar when translating. Hint

types such as Iterable without first importing them. Note: In some examples we use capitalized variants of types, such as List, and sometimes we use plain list. They are equivalent, but the prior variant need to elide actual logic in regular Python code – for example, when writing methods in overload variants or custom protocols. The recommended style is to use ellipses to do so, just like in stub files describe the function’s behavior: from typing import Union, overload # Overload *variants* for 'mouse_event'. # These variants give extra information to the type checker. # They are ignored at runtime. @overload