| # Usage: | |
| # source iterm2.zsh | |
| # iTerm2 tab color commands | |
| # https://iterm2.com/documentation-escape-codes.html | |
| if [[ -n "$ITERM_SESSION_ID" ]]; then | |
| tab-color() { | |
| echo -ne "\033]6;1;bg;red;brightness;$1\a" | |
| echo -ne "\033]6;1;bg;green;brightness;$2\a" |
| // This example shows how to render pages that perform AJAX calls | |
| // upon page load. | |
| // | |
| // Instead of waiting a fixed amount of time before doing the render, | |
| // we are keeping track of every resource that is loaded. | |
| // | |
| // Once all resources are loaded, we wait a small amount of time | |
| // (resourceWait) in case these resources load other resources. | |
| // | |
| // The page is rendered after a maximum amount of time (maxRenderTime) |
| Latency Comparison Numbers (~2012) | |
| ---------------------------------- | |
| L1 cache reference 0.5 ns | |
| Branch mispredict 5 ns | |
| L2 cache reference 7 ns 14x L1 cache | |
| Mutex lock/unlock 25 ns | |
| Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
| Compress 1K bytes with Zippy 3,000 ns 3 us | |
| Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
| Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
By Don Libes
Originally appeared in the Nov. 1990 "C User's Journal" and is also reprinted as Chapter 35 of "Obfuscated C and Other Mysteries", John Wiley & Sons, 1993, ISBN 0-471-57805-3. http://www.wiley.com/compbooks/m3.html.
This column will describe a set of functions to implement software
| import javax.script.ScriptEngine; | |
| import javax.script.ScriptEngineManager; | |
| import scala.tools.nsc.interpreter.IMain; | |
| import scala.tools.nsc.settings.MutableSettings.BooleanSetting; | |
| public class ScalaTest { | |
| public static void main(String[] args) throws Exception{ | |
| ScriptEngine engine = new ScriptEngineManager().getEngineByName("scala"); | |
| ((BooleanSetting)(((IMain)engine).settings().usejavacp())).value_$eq(true); |
| import scala.util.parsing.combinator.JavaTokenParsers | |
| object Test extends App with ExprParsers2 { | |
| println(eval(parseAll(expr, "1+1-2*3").get)) | |
| } | |
| trait ExprParsers1 extends JavaTokenParsers { |
| #!/bin/bash | |
| # | |
| # Configure postfix to relay all emails through gmail. | |
| # | |
| # Also install mailx to send testmails. | |
| # | |
| # Based on | |
| # http://mhawthorne.net/posts/postfix-configuring-gmail-as-relay.html | |
| # http://carlton.oriley.net/blog/?p=31 | |
| # http://opentodo.net/2013/03/postfix-smtp-relay-to-smtp-gmail-com/ |
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