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/** | |
* Identity | |
*/ | |
var Identity = function(val) { | |
this.val = val; | |
}; | |
Identity.prototype.map = function(fn) { // Functor | |
return Identity.of(fn(this.val)); | |
}; | |
Identity.prototype.ap = function(app) { // Apply |
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Latency Comparison Numbers | |
-------------------------- | |
L1 cache reference 0.5 ns | |
Branch mispredict 5 ns | |
L2 cache reference 7 ns 14x L1 cache | |
Mutex lock/unlock 25 ns | |
Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
Compress 1K bytes with Zippy 3,000 ns 3 us | |
Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
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