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list all fields in a table pragma table_info(tableName)

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Errors

1. Could not install the app on the device, read the error above for details. Make sure you have an Android emulator running or a device connected and have

• fix by: chmod 755 android/gradlew

2. react-native run-android not found default

• fix by remove dependency that not used from android/settings.gradle and MainApplication.java

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colored diff command's result svn | vim -R -

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1. undefined is not a function (evaluating ...) this error occurred because import undefault item as a default item eg

`// should not work import AsyncStorage from 'react-native';

// work import { AsyncStorage } from 'react-native'; `

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1. Error aapt: error while loading shared libraries: libgcc_s.so.1: cannot open shared object file: No such file or directory archlinux Archlinux install https://www.archlinux.org/packages/core/x86_64/lib32-gcc-libs/

2. Error stuck loading from ip:port on android emulator. Try to increase setting for fs.inotify.watch_user_watches by follow this thread facebook/react-native#3199 or one of these commands echo 65536 | sudo tee -a /proc/sys/fs/inotify/max_user_watches or sudo sysctl fs.inotify.max_user_watches=65536, also setting ip:port for dev server in android emulator by choose dev setting -> dev server on dev menu pop up (open popup by shake device or run command adb shell input keyevent 82)

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1. Select all text in a buffer (like ctrl + a): c-x h (mark-whole-buffer)
2. Reformat a block code (Auto indent code): c-m-\ (indent-region) (https://www.emacswiki.org/emacs/ReformatBuffer)
3. comment a line of code or a block of code: m-;
4. uncomment a region: c-m ;

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const mongoose = require('mongoose');
mongoose.connect('mongodb://localhost:27017/testdyn');
const consola = require('consola');

// use generator
function* limit() {
    let index = 0;
    while (index < 10000) {
        yield index++;
    }

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error when run mix ecto.create fix by change password and restart postgres as following commands

sudo -u postgres psql -c "ALTER USER postgres PASSWORD 'postgres';"
sudo /etc/init.d/postgresql restart

Then install this tool https://github.com/rvoicilas/inotify-tools/wiki when rung mix phx.server

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1. create a file to keep environment variables (called env.sh here) at /etc/profile.d/env.sh
2. export two proxy variable in /etc/profile.d/evn.sh as below

export http_proxy=http://<ip/name>:<port>
export https_proxy=$http_proxy

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package main

import (
	"fmt"
	"labix.org/v2/mgo"
	"labix.org/v2/mgo/bson"
	"time"
)

type Person struct {