Developing

in a black

hole

http://github.com/javiacei/developing-in-a-black-hole http://github.com/javiacei/dotfiles

Vim

Vim, Vi IMproved, is a power open-source text editor

• Awesome documentation (:help)
• Huge community
• Extensible, customizable and portable

Modes

• Normal esc
• Visual v
• Insert i
• Command-line :!

Navigation

• Movement keys: h, j, k, l
• Forward, back: w, b
• Move multiplier <number><movement>
• Go to the beginning of current line 0 and to the end $
• Go to the beginning of the file gg and to the end G
• Go to line :<linea>

# Example
from django.db import models

class Vehicle(models.Model):
  mma = models.DecimalField(max_digits=10, decimal_places=2, null=True)
  length = models.DecimalField(max_digits=10, decimal_places=2, null=True)
  model = models.CharField(max_length=200, null=True, blank=True)

Actions

• Insert at the end of the current line A
• Add a new line below o and above O
• Change text c + <movement>
• Copy y + <movement> and paste p
• Delete d + <movement>
• Undo u and redo c-r
• Autocomplete c-n
• Repeat the last executed command .

# Example
from django.db import models

class Vehicle(models.Model):
  mma = models.DecimalField(max_digits=10, decimal_places=2, null=True)
  length = models.DecimalField(max_digits=10, decimal_places=2, null=True)
  model = models.CharField(max_length=200, null=True, blank=True)

Search

• Search inside current line f<character> (forward), F<character> (back)
• Search inside current file /
• Search selected word *
• Search and replace :%s/<search>/<replace>

# Example
from django.db import models

class Vehicle(models.Model):
  mma = models.DecimalField(max_digits=10, decimal_places=2, null=True)
  length = models.DecimalField(max_digits=10, decimal_places=2, null=True)
  model = models.CharField(max_length=200, null=True, blank=True)

Selection

• In visual mode v
• Block selection c-v

# Example
from django.db import models

class Incident(models.Model):
    INCIDENT_ACTIONS = (
        (ASSIGN_DRIVER, 'Assign driver'),
        (UNASSIGN_DRIVER, 'Unassign driver'),
        (UPLOAD_CARGO_MANIFEST, 'Upload cargo manifest'),
        (DELETE_CARGO_MANIFEST, 'Delete cargo manifest'),
    )

    action = models.CharField(max_length=30, choices=INCIDENT_ACTIONS, default=ACTION_OTHER)

Macros

• Create a new macro q + <macro register>
• Apply macro @ + <macro>

# Example
from django.db import models

class Incident(models.Model):
    INCIDENT_ACTIONS = (
        (ASSIGN_DRIVER, 'Assign driver'),
        (UNASSIGN_DRIVER, 'Unassign driver'),
        (UPLOAD_CARGO_MANIFEST, 'Upload cargo manifest'),
        (DELETE_CARGO_MANIFEST, 'Delete cargo manifest'),
    )

    action = models.CharField(max_length=30, choices=INCIDENT_ACTIONS, default=ACTION_OTHER)

Functions

• Execute vim functions with :
• :write, :w, :quit ,:q, :edit, :e
• Execute command line :!

Panels, Tabs

• Horizontal :split :sp and vertical :vsplit :vsp panels
• Tabs :tabe. Navigate with gt and Gt

Plugins

• vundle
• nerdtree
• ctrlp
• ack
• vim-tmux-navigator
• vim-snippets
• vim-flake8
• vim-numbertoggle

Tips

• Learn to speak Vim (see resources)
• Create your own configuration
• Search and try plugins, but ...
• Install those you are going to use
• Keep calm and be patient

Resources

• Learning the vi and Vim Editors
• Practical Vim
• spf13-vim

Tmux

tmux is a client-server terminal multiplexer that lets you switch between several programs in one terminal.

Windows

• Create windows <leader> + c
• Rename windows <leader> + ,
• Navigate between windows <leader> + w, <leader> + number

Panels

• Create horizontal <leader> + - and vertical <leader> + | panels
• Resize panel <leader> + L and <leader> + H
• Remove panel <leader> + x
• Zoom panel <leader> + z
• Navigation <leader> + q and like vim using vim-tmux-navigator

Navigation

• Enter in navigation mode <leader> + [
• Same vim commands to navigate
• Search / and navigate between searches n y N

Sync

• Panels syncronization <leader> + : and set property :setw synchronize-panes

Pair Prog

• Create a named session in detached mode tmux new-session -s pair -d
• Connect to a named session tmux attach-session -t pair

Tips

• Change tmux leader to c-a mapping caps lock key to control
• Configure your own tmux in ~/.tmux.conf
• Use and configure vim-tmux-navigator

Resources

• tmux: Productive Mouse-Free Development

HTTPie

Command line HTTP client to make interaction with web services as human-friendly as possible

• Command http to make requests
• JSON highlighting
• Provide query params ==
• JSON by default =, :=, @=
• Set headers Header:Value
• Sessions

Using curl

Using curl ...

curl -X POST -H "Accept: application/json"
-H "Content-type: application/json"
-d '{"grant_type":"password","client_id":"<client_id>","username":"","password":""}' \

curl -H "Accept: application/json"
-H "Content-type: application/json"
-H "Authorization: Bearer " \

Using httpie

http POST grant_type=password client_id=<client_id> username= password= http "authorization: Bearer " (and with --session= to save the session)

jq

jq is a command line JSON processor

• Simple syntax
• JSON highlighting
• Lots of pipe filters

Demo

jq '(.results | limit(3;.[]) | [.origin, .destination] | join(" -> "))'

Thanks!

Francisco Javier Aceituno [email protected] http://github.com/javiacei

Software Engineer in OnTruck

We will move 1.000.000 trucks with python, join us! [email protected]