UplandsDynamic

Change root password in MariaDB Docker container running with docker-compose

Override the entrypoint in docker-compose.yml for the MariaDB Docker container by adding:

entrypoint: mysqld_safe --skip-grant-tables --user=mysql

The start up the Docker Compose stack:

$> docker-compose up -d

UplandsDynamic

Here are the steps required to install OpenCV for C++ on the MacBook Pro M1.

1. If not already installed, install Homebrew, by following instructions here: https://brew.sh/.
2. If Xcode is not already installed, install it from the App Store (or other methods).
3. Open a terminal and run: 

  brew install opencv

4. In the terminal, run: 

UplandsDynamic

import { Component, OnInit } from '@angular/core';
import { OnDestroy } from '@angular/core';
import { Router, NavigationEnd } from '@angular/router';
import { Subscription } from 'rxjs/Rx';

@Component({
  selector: 'scroll-to-anchor-example',
  template: `<a type="button" md-button class="button" routerLink="/this-view-url" 
  fragment="test-fragment" routerLinkActive="active">Go to test fragment</a>
  <p>Blah blah blah ...</p>

UplandsDynamic

  deleteEmptyProps(obj: any): any {
    // modifies passed obj in place, removing empty properties (inc. empty arrays)
    return Object.keys(obj).forEach(k => {
      if (!obj[k] || obj[k] === undefined ||
        Array.isArray(obj[k]) && obj[k].length === 0) {
        delete obj[k];
      }
    });
  }

UplandsDynamic

0 info it worked if it ends with ok
1 verbose cli [ '/home/dan/.nvm/versions/node/v7.9.0/bin/node',
1 verbose cli   '/home/dan/.nvm/versions/node/v7.9.0/bin/npm',
1 verbose cli   'run',
1 verbose cli   'build-installer' ]
2 info using npm@4.2.0
3 info using node@v7.9.0
4 verbose run-script [ 'prebuild-installer',
4 verbose run-script   'build-installer',
4 verbose run-script   'postbuild-installer' ]

UplandsDynamic

let o1 = performance.now();
let test = ['a', 'b', 'c']
let toRemove = test.indexOf('b');
if(toRemove !== -1){
test.splice(toRemove, 1)
console.log(test);
}
let o2 = performance.now();
console.log(o2 - o1);

UplandsDynamic

def update_url_param(request, param_name):
    # function to update request.GET params, retaining all existing params, with param_name added or updated.
    existing_params = dict(request.GET)  # convert immutable querydict to mutable dict
    if not existing_params:
        return '?{}='.format(param_name)
    else:  # if existing params
        existing_str = ''
        existing_params.pop(param_name, None)  # pop off existing param_name if exists
        for p, v in existing_params.items():
            existing_str += '{}{}&'.format(p, '={}'.format(v[0]) if v[0] else '')