Tuesday, 29 November 2016

Rebase modified branch

you need to put things back first:

git checkout --
git checkout --
git checkout --
git checkout --

then you can:

git rebase origin/master

Friday, 7 October 2016

List the javascript functions available in JQuery or perhaps another library


                var objs = Object.getOwnPropertyNames(jQuery);
                    for(var i in objs ){
                    console.log(objs[i]);
                }

Wednesday, 8 June 2016

Git on linux - a few fixes to some issues

A brief list of issues and ways to resolve when working on linux

Attempting to communicate with the server but this happens eg:

#git remote show origin

(gnome-ssh-askpass:18745): Gtk-WARNING **: cannot open display: localhost:12.0

Yep I do not have a display. Solution;

#unset SSH_ASKPASS

Attempt to push the first version of the repo but this happens:



#git push -u origin master

error: The requested URL returned error: 403 Forbidden while accessing https://github.com/S-Stephen/RECK.git/info/refs


fatal: HTTP request failed

Turns out that I cut and pasted the code from github to setup the repo which included the line:


git remote add origin https://github.com/My-Username/APPNAME.git

This does not include the username I wish to login as I therefor eneed to change this locally to be:

https://My-Username@github.com/My-Username/APPNAME.git

To do this:

# git remote set-url origin https://My-Username@github.com/My-Username/APPNAME.git

And away we go:

I did a #git add * but too much got added including my config/local.js file. 
Before the commit remove this:

# git reset config/local.js

Including emoji / unicode characters to email subject from a scipt

💣 Time to add special characters to your email subjects

I came across this problem when a client asked for emails from my web application to stand out in their inbox.  The emails were informing a user that an alarm had gone off and they would like a bomb or similar to appear in their inbox. 

After a bit of googling and finding many sites that explained how to do this manually (cut and paste characters or using particular 'clipboard' style tools).  I figured out the answer of how to embed the unicode into the message.

So given my script (a nodejs application) I followed the recipe below:

Find the character the user is interested in for example search a site like http://www.fileformat.info

Once you have found the required character locate the UTF-8 (hex string) in the case of the alarm clock (http://www.fileformat.info/info/unicode/char/23f0/index.htm): 'e28fb0'

Embed this in the subject string via: =?UTF-8?Q?=E2=8F=B0?= (ie enclose the hex in =?UTF-8?Q?= and ?=).

Send message and as long as their mail agent supports the character hey hoe!

Monday, 21 September 2015

Sails waterline ORM on an MySQL view



I am required to keep a track of the number of selections a user has made so that when they are below a particular number they can be contacted.

To do this I need to monitor a group by with having count(*) query, for which I decided to generate a view:

create view progress_view as select user.username, display_name, email, year_of_entry, count(*) as num_choices from user left join selection on user.username = selection.username where progress = 1 group by username;

unfortunately defining a regular sails model object fails to load as it complains that we are 'Trying to define a collection (progress_view) which already exists.'

to get around this and to prevent a regular query attempting to retrieve the default fields createdAt, updateAt, id when using the .find() query on the table the following was wadded to the model definition:


var Progress = {
  // Enforce model schema in the case of schemaless databases
  schema: true,

  autoPK: false,
  autoCreatedAt: false,
  autoUpdatedAt: false,
  tableName: 'progress_view',
  migrate: 'safe',

  attributes: {
    username  : { type: 'string', unique: true },
    email     : { type: 'email' }, //,  unique: true },
    display_name     : { type: 'string' }, //,  unique: true },
year_of_entry : { type: 'integer' }, //only on some will be added -> or maybe all, but generally in the inst_name?
num_choices : { type: 'integer' }, //note the minimum here is always 1! evern if the student has not chosen on (as we are identifying with left join)
  }
};

module.exports = ProgressProgress;

hurrah - we can query our view!

Thursday, 17 July 2014

Copying google calendars.



For static calendars (one off consolidation):

export https://support.google.com/calendar/answer/37111?hl=en

import: https://digibites.zendesk.com/hc/en-us/articles/200134792-How-do-I-import-ics-ical-csv-files-into-Google-Calendar-

Wednesday, 5 March 2014

Docker Notes - setting up a lisp container

These notes are to help serve as a reminder for how I setup / played with Docker to host a lisp environment client.

In a new directory create a file called 'Dockerfile' and populate as follows:

FROM centos
MAINTAINER Stephen Shorrock
# Install sbcl
RUN rpm -Uvh http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
RUN yum install -y sbcl


Then in that same directory build the docker image/container:

docker build -t="sbcl" ./

Once built run the container as a new bash shell:

docker run -i -t sbcl /bin/bash

start lisp:

sbcl

or run the sbcl interpreter striaght away:

docker run -i -t sbcl sbcl

You could even run a lisp script on the local drive by mounting a path, eg if your script was /tmp/myscripts/script1.lisp

eg (content of /tmp/myscripts/script1.lisp)

(write-line "Hello, World!")


docker run -i -v /tmp/myscripts:lisp_scripts -t sbcl sbcl --script lisp_scripts/script1.lisp

#: Hello, World!

 ...

once finished exit lisp

(quit)

and quit the docker container:

Ctrl-P Ctrl-Q


To attach back into the container, find the id of the running container

sudo docker ps

Then attach back:

sudo docker attach