| 1.9.3-p125 :036 > p = DotHash::Properties.new({}) | |
| => #<DotHash::Properties:0x007f8cf408a308 @hash={}> | |
| 1.9.3-p125 :037 > p = DotHash::Properties.new({:foo => :bar}) | |
| => #<DotHash::Properties:0x007f8cf4067740 @hash={:foo=>:bar}> | |
| 1.9.3-p125 :038 > p.respond_to?(:foo) | |
| => false | |
| 1.9.3-p125 :039 > p.foo | |
| => :bar |
| (defn all-functions | |
| ([root-n] (all-functions root-n [])) | |
| ([cur fns] | |
| (if (= java.util.ArrayList (class cur)) | |
| (if (empty? cur) | |
| fns | |
| (map #(all-functions % fns) cur)) | |
| (if (= org.jruby.ast.DefnNode (class cur)) | |
| (all-functions (.childNodes cur) (conj fns cur)) | |
| (all-functions (.childNodes cur) fns))))) |
| (defn sha-512 | |
| "Return the SHA-512 of the given string" | |
| [data] | |
| (let [md (. java.security.MessageDigest getInstance "SHA-512")] | |
| (. md update (.getBytes data)) | |
| (let [bytes (. md digest)] | |
| (reduce #(str %1 (format "%02x" %2)) "" bytes)))) | |
| (defn hash-repeatedly | |
| "Hash the given string n number of times" |
| ;; Clojure library clj-yaml deserializes into arbitrary Java classes | |
| user=> (require '[clj-yaml.core :as yaml]) | |
| nil | |
| user=> (yaml/parse-string "!!java.io.File") | |
| #<File > |
| vmstat is a helpful tool for figuring out performance problems on servers. | |
| user@server-prod-db01:~$ vmstat 5 | |
| procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu---- | |
| r b swpd free buff cache si so bi bo in cs us sy id wa | |
| 1 0 10860 51884 41656 3712392 0 0 1297 107 0 0 10 3 84 3 | |
| 0 0 10860 50388 41668 3713204 0 0 41 446 1409 1173 6 2 91 1 | |
| The "b" column shows blocked processes waiting for IO. In this case it's 0, which is a good thing. |
| In the resque web interface, if you see a process that is hanging for a long | |
| time, you can figure out what it's waiting on by looking at the PID. Say | |
| we see pid 4894 taking a long time. In the console do: | |
| $ sudo strace -p 4894 | |
| Process 4894 attached - interrupt to quit | |
| wait4(15045, | |
| The strace just hangs there, and we think that perhaps the process isn't | |
| doing anything. If you look at the man page for wait4, you see that the |
| #!/bin/bash | |
| # First change your Rails dependency in the Gemfile to 3.2.12. | |
| # Make sure afterwards that the commit includes the update to the Rails version | |
| # and that it contains the JSON gem version 1.7.7. | |
| git co -b patch_CVE-2013-0269_CVE-2013-0276 | |
| bundle update rails | |
| bundle update json | |
| git add -A |
If you run without the --debug flag, jruby steps into functions rather than skipping them. Perhaps that is related to this warning when starting with -rdebug and omitting the --debug flag:
warning: tracing (e.g. set_trace_func) will not capture all events without --debug flag
Running 'next' does seem to work properly when I run the jruby debugger as follows:
| import Text.XML.Light | |
| import Network.Curl | |
| import System.IO | |
| import System.Environment | |
| import System.Exit | |
| extractIP :: String -> String | |
| extractIP xmlString = | |
| let | |
| element = parseXMLDoc xmlString >>= findElement (QName "ipv4" Nothing Nothing) |
| { | |
| "auto_complete_commit_on_tab": true, | |
| "color_scheme": "Packages/Color Scheme - Default/Blackboard.tmTheme", | |
| "draw_white_space": "all", | |
| "ensure_newline_at_eof_on_save": true, | |
| "font_size": 23.0, | |
| "hot_exit": false, | |
| "remember_open_files": false, | |
| "rulers": | |
| [ |