mikea

#include <stdio.h>
#include <time.h>

typedef unsigned int uint32; 
typedef long long int64;

template<typename F, typename V>
V collision_point(const F& f, V x) {
    V slow = x;
    V fast = f(x);

mikea

// setup 
int status = 0; 

do { 
  // preconditions 
  status = doSomething(); 
  if (status) break; 
  status = doSomethingElse(); 
  if (status) break; 

mikea

PAYLOAD_TEMPLATE = \
"""--==boundary\r
Content-Disposition: form-data; name="file"; filename="%s"\r
Content-Type: %s\r
\r
%s\r
--==boundary--\r
"""

destination_url = blobstore.create_upload_url('/upload-sink')

mikea

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                    4x mutex op, 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy        3,000 ns
Send 2K bytes over 1 Gbps network   20,000 ns
Read 1 MB sequentially from memory  250,000 ns

mikea

L1 cache reference                  0.5 ns
Branch mispredict                   5 ns
L2 cache reference                  7 ns
Mutex lock/unlock                   25 ns
Main memory reference               100 ns             
Compress 1K bytes with Zippy        3,000 ns           3 µs
Send 2K bytes over 1 Gbps network   20,000 ns         20 µs
Read 1 MB sequentially from memory  250,000 ns       250 µs
Round trip within same datacenter   500,000 ns       0.5 ms
Disk seek                           10,000,000 ns     10 ms

mikea

; Function Attrs: nounwind readonly uwtable
define double @_Z10DotProductRK6VectorS1_(%class.Vector* nocapture %v1, %class.Vector* nocapture %v2) #0 {
entry:
  %size_.i = getelementptr inbounds %class.Vector* %v1, i64 0, i32 0
  %0 = load i64* %size_.i, align 8, !tbaa !0
  %data_.i = getelementptr inbounds %class.Vector* %v1, i64 0, i32 1
  %1 = load double** %data_.i, align 8, !tbaa !3
  %size_.i8 = getelementptr inbounds %class.Vector* %v2, i64 0, i32 0
  %2 = load i64* %size_.i8, align 8, !tbaa !0
  %data_.i9 = getelementptr inbounds %class.Vector* %v2, i64 0, i32 1

mikea

class Printer[T](_t: T) {
  def t = _t
  def print():Unit = { println(t) }
}

class IterablePrinter[T, I <: Iterable[T]](p : Printer[I]) {
  def printEach() = p.t.foreach(println)
}

object Test extends App {

mikea

public class HeadTest {
    public static void main(String[] args) {
        Observable<Integer> fileReader = Observable.create((Observable.OnSubscribe<Integer>) subscriber -> {
            System.out.println("Reading from a file");
            subscriber.onNext(100);  // header

            for (int i = 0; i < 10; ++i) {
                subscriber.onNext(i);
            }

mikea

public class HeadTest {
    public static void main(String[] args) {
        Observable<Integer> fileReader = Observable.create((Observable.OnSubscribe<Integer>) subscriber -> {
            System.out.println("Reading from a file");
            subscriber.onNext(100);  // header

            for (int i = 0; i < 10; ++i) {
                subscriber.onNext(i);
            }

mikea

public class Test {
  private static void foo(String value, int...ints) {
    System.out.println(value + " " + Arrays.asList(ints));
  }

  private static void bar(String value, int...ints) {
    foo(value, ints);
  }

  private static void baz(String value) {