c# - Are these enumerations code functionally the same? -

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foreach ( effect effect in this.effects.where ( e => e.istransparenteffect && e.hasgpusupport ) )     yield return new realtimeeffect<transparenteffect> ( effect );

vs

this.effects.where ( e => e.istransparenteffect && e.hasgpusupport )         .select ( e => new realtimeeffect<transparenteffect> ( e ) );

i somehow think select try gather results differently yielding in #1?

also there performance difference?

both codes return same results. both have deferred execution (i.e. nothing executed until start enumerating result) , stream results (i.e. not buffered). there shouldn't significant performance difference between 2 versions


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