(C-x means ctrl+x, M-x means alt+x)
The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf
:
# Hello, and welcome to makefile basics. | |
# | |
# You will learn why `make` is so great, and why, despite its "weird" syntax, | |
# it is actually a highly expressive, efficient, and powerful way to build | |
# programs. | |
# | |
# Once you're done here, go to | |
# http://www.gnu.org/software/make/manual/make.html | |
# to learn SOOOO much more. |
# United States Postal Service (USPS) abbreviations. | |
abbreviations = [ | |
# https://en.wikipedia.org/wiki/List_of_states_and_territories_of_the_United_States#States. | |
"AK", "AL", "AR", "AZ", "CA", "CO", "CT", "DE", "FL", "GA", "HI", "IA", | |
"ID", "IL", "IN", "KS", "KY", "LA", "MA", "MD", "ME", "MI", "MN", "MO", | |
"MS", "MT", "NC", "ND", "NE", "NH", "NJ", "NM", "NV", "NY", "OH", "OK", | |
"OR", "PA", "RI", "SC", "SD", "TN", "TX", "UT", "VA", "VT", "WA", "WI", | |
"WV", "WY", | |
# https://en.wikipedia.org/wiki/List_of_states_and_territories_of_the_United_States#Federal_district. | |
"DC", |
Producer | |
Setup | |
bin/kafka-topics.sh --zookeeper esv4-hcl197.grid.linkedin.com:2181 --create --topic test-rep-one --partitions 6 --replication-factor 1 | |
bin/kafka-topics.sh --zookeeper esv4-hcl197.grid.linkedin.com:2181 --create --topic test --partitions 6 --replication-factor 3 | |
Single thread, no replication | |
bin/kafka-run-class.sh org.apache.kafka.clients.tools.ProducerPerformance test7 50000000 100 -1 acks=1 bootstrap.servers=esv4-hcl198.grid.linkedin.com:9092 buffer.memory=67108864 batch.size=8196 |
print("hello from a python script") |
Miles Sabin recently opened a pull request fixing the infamous SI-2712. First off, this is remarkable and, if merged, will make everyone's life enormously easier. This is a bug that a lot of people hit often without even realizing it, and they just assume that either they did something wrong or the compiler is broken in some weird way. It is especially common for users of scalaz or cats.
But that's not what I wanted to write about. What I want to write about is the exact semantics of Miles's fix, because it does impose some very specific assumptions about the way that type constructors work, and understanding those assumptions is the key to getting the most of it his fix.
For starters, here is the sort of thing that SI-2712 affects:
def foo[F[_], A](fa: F[A]): String = fa.toString
package org.apache.spark.sql.catalyst.expressions.codegen | |
import org.codehaus.janino.SimpleCompiler | |
object CodeGenBenchmark { | |
def quasiquotes(): Unit = { | |
import scala.reflect.runtime.{universe => ru} | |
import scala.reflect.runtime.universe._ |
import java.io.RandomAccessFile; | |
import java.lang.reflect.Field; | |
import java.lang.reflect.Method; | |
import java.nio.channels.FileChannel; | |
import sun.nio.ch.FileChannelImpl; | |
import sun.misc.Unsafe; | |
@SuppressWarnings("restriction") | |
public class MMapper { |