perf: resolve a namespace prefix without allocating - #29
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`resolveNamespace` ran `split(':')` on every attribute of every element.
Reading a 344 MB mzML carries about 1.4 million of them, so that is 1.4
million arrays for a question two `indexOf` calls answer: 1447 ms to 1396 ms,
median of three runs each.
Assisted-By: Claude Opus 5
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resolveNamespaceransplit(':')on every attribute of every element. Reading a 344 MB mzML carries about 1.4 million of them, so that is 1.4 million arrays for a question twoindexOfcalls answer: 1447 ms to 1396 ms, median of three runs each.