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String relational operators #7194
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The String class has an incomplete set of relational operators with `const char*`. The 6 operators `==`,`!=`,`<`,`>`,`<=`,`>=` must be defined between String and String, but also between String and `const char*`. The motivation is to treat left and right operands symmetrically. str == "hello" works, but swapping arguments to "hello" == str doesn't, which is a potential user surprise. As String is implicitly convertible from `const char*`, but this incurs a "strdup". So it also makes sense to provide relational operators directly with const char* to avoid the expensive promotion of const char* to temporary String, just to do a string value comparison. Resolves: #7139
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The String class has an incomplete set of relational operators with
const char*. The 6 operators==,!=,<,>,<=,>=must bedefined between String and String, but also between String and
const char*.The motivation is to treat left and right operands symmetrically. str
== "hello" works, but swapping arguments to "hello" == str doesn't,
which is a potential user surprise.
As String is implicitly convertible from
const char*, but this incursa "strdup". So it also makes sense to provide relational operators
directly with const char* to avoid the expensive promotion of const
char* to temporary String, just to do a string value comparison.
Resolves: #7139