kkdai

import simplejson as json
import lxml

class objectJSONEncoder(json.JSONEncoder):
    """A specialized JSON encoder that can handle simple lxml objectify types
       >>> from lxml import objectify
       >>> obj = objectify.fromstring("<Book><price>1.50</price><author>W. Shakespeare</author></Book>")
       >>> objectJSONEncoder().encode(obj)
       '{"price": 1.5, "author": "W. Shakespeare"}'       
    """

kkdai

"""
Convert an XML list of Tim Hortons restaurant locations to JSON

Usage: python parse.py sourcefile destfile
E.g.: python parse.py locations.xml locations.json
"""
import json
import sys

try:

kkdai

IMAP

Gmail/Google Apps:

Host: imap.gmail.com
Port: 993
Username: youremail@gmail.com or youremail@yourdomain.com (Google Apps)
Password: Your email password
SSL: Yes

kkdai

# Makefile for a go project
#
# Author: Jon Eisen
# 	site: joneisen.me
# 	
# Targets:
# 	all: Builds the code
# 	build: Builds the code
# 	fmt: Formats the source files
# 	clean: cleans the code

kkdai

~/tmp $ go build -gcflags=-S test-1.go | more
# command-line-arguments
"".main t=1 size=256 value=0 args=0x0 locals=0x70
        0x0000 00000 (/Users/patrick/tmp/test-1.go:7)   TEXT    "".main(SB), $112-0
        0x0000 00000 (/Users/patrick/tmp/test-1.go:7)   MOVQ    (TLS), CX
        0x0009 00009 (/Users/patrick/tmp/test-1.go:7)   CMPQ    SP, 16(CX)
        0x000d 00013 (/Users/patrick/tmp/test-1.go:7)   JLS     231
        0x0013 00019 (/Users/patrick/tmp/test-1.go:7)   SUBQ    $112, SP
        0x0017 00023 (/Users/patrick/tmp/test-1.go:7)   FUNCDATA        $0, gclocals·7d2d5fca80364273fb07d5820a76fef4(SB)
        0x0017 00023 (/Users/patrick/tmp/test-1.go:7)   FUNCDATA        $1, gclocals·5ef976c2593056b9243adf402ae9d952(SB)

kkdai

    NSURL *url = [NSURL URLWithString:@"http://opendata.dot.taipei.gov.tw/opendata/alldescriptions.json"];
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    [NSURLConnection sendAsynchronousRequest:request
                                       queue:[NSOperationQueue mainQueue]
                           completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {
                               unsigned long big5 = CFStringConvertEncodingToNSStringEncoding(kCFStringEncodingBig5_HKSCS_1999);
                               NSString *json = [[NSString alloc] initWithData:data encoding:big5];
                               NSError *error;
                               NSDictionary *dictionary =
                               [NSJSONSerialization JSONObjectWithData:[json dataUsingEncoding:NSUTF8StringEncoding]

kkdai

There are three easy to make mistakes in go. I present them here in the way they are often found in the wild, not in the way that is easiest to understand.

All three of these mistakes have been made in Kubernetes code, getting past code review at least once each that I know of.

1. Loop variables are scoped outside the loop.

What do these lines do? Make predictions and then scroll down.

func print(pi *int) { fmt.Println(*pi) }

kkdai

$ VBoxManage list usbhost
Host USB Devices:

...

UUID:               248ee848-3d9e-47cc-96d7-779e54946e39
VendorId:           0x0bda (0BDA)
ProductId:          0x0169 (0169)
Revision:           97.35 (9735)
Port:               1

kkdai

FROM debian:stretch

ENV LC_ALL en_US.UTF-8  
ENV LANG en_US.UTF-8

RUN apt-get update && apt-get install -y \  
    apt-transport-https \
    ca-certificates \
    curl \
    gconf2 \

kkdai

package math

type A struct {
	FieldA1 int32
	FieldA2 int32
}

func (this A) MarshalJSON() ([]byte, error) {
	m := make(map[string]interface{}, 3)
	m["FieldA1"] = this.FieldA1