18 lines
576 B
Plaintext
18 lines
576 B
Plaintext
%% title = "prefix matches with C strings"
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% id = "01JCGAM55352EF247HZ358BAJ8"
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- one thing I realised while reading some code at work that worked with C strings: it's surprising how easy it is to match a prefix on a C string.
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```c
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if (s != NULL
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&& s[0] == 'h'
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&& s[1] == 'u'
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&& s[2] == 'g')
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{
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// ...
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}
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```
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% id = "01JCGAM5537WYE3GEN6WGX8WD0"
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- this works because of the NUL terminator---if it appears at any point in the string, the `s[i] == c` comparison will return `false`, thus breaking the `&&` chain---so indices always stay in-bounds!
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