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Error while installing json gem 'mkmf.rb can't find header files for ruby'
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For Xcode 11 on macOS 10.14, this can happen even after installing Xcode and installing command-line tools and accepting the license with
sudo xcode-select --install
sudo xcodebuild -license accept
The issue is that Xcode 11 ships the macOS 10.15 SDK which in...
How to convert a SVG to a PNG with ImageMagick?
... On OSX, with Inkscape installed for X11, it worked for me using: /Applications/Inkscape.app/Contents/Resources/bin/inkscape -z -e test.png -w 1024 -h 1024 test.svg
– chmullig
Mar 14 '14 at 0:26
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How to determine a user's IP address in node
...xample, the request passed through proxy1, proxy2, and then proxy3. proxy3 appears as remote address of the request.
This is the solution suggested by Arnav Gupta with a fix Martin has suggested below in the comments for cases when x-forwarded-for is not set :
var ip = (req.headers['x-forwarded-f...
How should I use try-with-resources with JDBC?
...you would usually inject the connection into the method (unlike the ad-hoc approach shown in OP's question), you could use a connection managing class that will be called to provide or close a connection (be it pooled or not). in that manager you can specify your connection behavior
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Find out who is locking a file on a network share
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I used an application called Unlocker to do this (the file was on the NAS). The app is here: filehippo.com/download_unlocker/tech and it worked for me but I can't vouch for this app
– Dan
Aug 17 ...
Why does my JavaScript code receive a “No 'Access-Control-Allow-Origin' header is present on the req
...sk-cors
$ pip install -U flask-cors
Then include the Flask cors in your application.
from flask_cors import CORS
A simple application will look like:
from flask import Flask
from flask_cors import CORS
app = Flask(__name__)
CORS(app)
@app.route("/")
def helloWorld():
return "Hello, cross-...
Git rebase: conflicts keep blocking progress
...up: a one-line text file, that contains the version number. This file is app/views/common/version.txt , which before rebasing contains this text:
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How to get the IP address of the docker host from inside a docker container
...'3'
services:
api:
build: ./api
volumes:
- ./api:/usr/src/app:ro
ports:
- "8000"
environment:
- MONGO_SERVER
command: /usr/local/bin/gunicorn -c /usr/src/app/gunicorn_config.py -w 1 -b :8000 wsgi
...
How to mock ConfigurationManager.AppSettings with moq
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I believe one standard approach to this is to use a facade pattern to wrap the configuration manager and then you have something loosely coupled that you have control over.
So you would wrap the ConfigurationManager. Something like:
public class ...
Best database field type for a URL
...rmance issues, and a huge VARCHAR sounds like overkill for most cases.
My approach: use a generous, but not unreasonably large VARCHAR length, such as VARCHAR(500) or so, and encourage the users who need a larger URL to use a URL shortener such as safe.mn.
The Twitter approach: For a really nice ...