ivermac

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ivermac

From a stack overflow link

Before line break

subkeyword = Session.query(
    Subkeyword.subkeyword_id, Subkeyword.subkeyword_word
).filter_by(
    subkeyword_company_id=self.e_company_id
).filter_by(
 subkeyword_word=subkeyword_word

ivermac

I noticed the following warning being triggered when launching the terminal in my Visual Studio app a couple of times but I had ignored it:

➜ nvm is not compatible with the npm config "prefix" option: currently set to "/usr/local" 
  Run `npm config delete prefix` or `nvm use --delete-prefix v8.0.0 --silent` to unset it.

I got the exact same warning when launching tmux locally and that caught my attention. I use nvm locally to manage node versions so initially I thought that was the problem. A quick search on google and I found out that a couple of people had experienced the same problem. I found my solution here in a github

ivermac

The following is a life-saver if you test request objects in django frequently and you don't necessarily need to hit a specific endpoint

from django.test import RequestFactory
request_factory = RequestFactory()
request = request_factory.get('/path', data={'name': u'test'})

ivermac

let username = 'john';
let password = 'doe';
let url = `https://httpbin.org/basic-auth/${username}/${password}`
let authString = `${username}:${password}`
let headers = new Headers();
headers.set('Authorization', 'Basic ' + btoa(authString))
fetch(url,{method: 'GET', headers: headers})
    .then(function (response) {
 console.log (response)

ivermac

python 2.7

Use urlencode from urllib for encoding and parse_qs from urlparse for decoding. urlencode takes a dict while parse_qs takes a string. I learned from this awesome link.

python 3.6

Use urlencode from urllib.parse for encoding and parse_qs from urllib.parse for decoding. urlencode takes a dict while parse_qs takes a string.

compatibility in both python 2.7 and 3.6 com

Install future package version 0.16.0. Import urlencode and parse_qs from future.moves.urllib.parse.

ivermac

This worked in both python 2.7 and 3.6.4

sum([[1, 2, 3], [4, 5, 6]], [])

ivermac

I use brew's postgresql service and after cold reboot on the mac I was using, I got the following when I tried to access psql on the command line:

psql: could not connect to server: No such file or directory Is the server running locally and accepting connections on Unix domain socket "/tmp/.s.PGSQL.5432"?

I got my fix from here. In a nutshell, the postmaster.pid file already exists and has to be removed. Removing file that file fixed it for me i.e.

rm -f /usr/local/var/postgres/postmaster.pid

You might also want to to checkout the postgres log file (tail -n 10 /usr/local/var/log/postgres.log) for any errors and bugs.

ivermac

Found clojure type reflection useful when using java objects in clojure. Especially in the repl

(use 'clojure.pprint 'clojure.reflect)
(def object-members (:members (reflect <object>)))
(print-table [:name :type :flags] (sort-by :name object-members))

The official documentation is here

ivermac

(defn get-query-params-str [query-params-map & [query-param-str]]
  "Converts a hash-map to a query param string containing the keys and values
   in the hash-map
   Note: this function assumes the values have already been url-encoded"
  (let [query-param-str (str query-param-str)
        query-param-str-blank? (string/blank? query-param-str)
        key (first (keys query-params-map))
        query-param-key (name (or key ""))
        query-param-val (and key (key query-params-map))]