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@senderle
senderle / hand-modify-pdf.md
Created September 23, 2020 15:03
So you want to modify the text of a PDF by hand

So you want to modify the text of a PDF by hand...

If you, like me, resent every dollar spent on commercial PDF tools, you might want to know how to change the text content of a PDF without having to pay for Adobe Acrobat or another PDF tool. I didn't see an obvious open-source tool that lets you dig into PDF internals, but I did discover a few useful facts about how PDFs are structured that I think may prove useful to others (or myself) in the future. They are recorded here. They are surely not universally applicable --
the PDF standard is truly Byzantine -- but they worked for my case.

@jeffjohnson9046
jeffjohnson9046 / kops-export-config.sh
Last active May 8, 2021 22:36
How to update kubectl to see a new Kubernetes cluster
# This is something that I always forget and had a surprisingly hard time finding (or better yet, understanding). Here's the
# scenario: a colleague creates a new kubernetes cluster, named" cluster-foo.example.com". You want to look at it (for
# troubleshooting, updating the deployment, whatever). To get your kubectl installation to "see" the new cluster, take the
# following steps:
# ASSUMPTION: You have pointed kops to some location where the cluster configurations are stored
# (I have this in my ~/.bash_profile):
export KOPS_STATE_STORE=s3://example-state-store
# Use kops to get the list of clusters
@armw4
armw4 / redux-is-smarter-than-you-think.md
Last active June 19, 2021 20:10
Optimizing your react components via redux....shouldComponentUpdate for free and more...

The Beginning

Yes...it's true...redux is smart....smarter than you even know. It really does want to help you. It strives to be sane and easy to reason about. With that being said, redux gives you optimizations for free that you probably were completely unaware of.

connect()

connect is the most important thing in redux land IMO. This is where you tie the knot between redux and your underlying components. You usually take state and propogate it down your component hiearchy in the form of props. From there, presentational

@eferro
eferro / index.html
Created July 16, 2015 14:16
inject state to a react component from outside
<html>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/0.13.3/react.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/0.13.3/JSXTransformer.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<body>
<div id="content">
</div>
</body>
@jed
jed / how-to-set-up-stress-free-ssl-on-os-x.md
Last active February 25, 2024 17:35
How to set up stress-free SSL on an OS X development machine

How to set up stress-free SSL on an OS X development machine

One of the best ways to reduce complexity (read: stress) in web development is to minimize the differences between your development and production environments. After being frustrated by attempts to unify the approach to SSL on my local machine and in production, I searched for a workflow that would make the protocol invisible to me between all environments.

Most workflows make the following compromises:

  • Use HTTPS in production but HTTP locally. This is annoying because it makes the environments inconsistent, and the protocol choices leak up into the stack. For example, your web application needs to understand the underlying protocol when using the secure flag for cookies. If you don't get this right, your HTTP development server won't be able to read the cookies it writes, or worse, your HTTPS production server could pass sensitive cookies over an insecure connection.

  • Use production SSL certificates locally. This is annoying

@rodyhaddad
rodyhaddad / timeago.filter.js
Created June 30, 2013 21:04
timeago filter for angularjs
.filter("timeago", function () {
//time: the time
//local: compared to what time? default: now
//raw: wheter you want in a format of "5 minutes ago", or "5 minutes"
return function (time, local, raw) {
if (!time) return "never";
if (!local) {
(local = Date.now())
}
@pfig
pfig / mkfavicon.sh
Created February 12, 2012 12:01
Make a multi-resolution favicon.ico from a source image, using ImageMagick
#!/bin/bash
# from
# http://bergamini.org/computers/creating-favicon.ico-icon-files-with-imagemagick-convert.html
convert source-WxW.png -resize 256x256 -transparent white favicon-256.png
convert favicon-256.png -resize 16x16 favicon-16.png
convert favicon-256.png -resize 32x32 favicon-32.png
convert favicon-256.png -resize 64x64 favicon-64.png
convert favicon-256.png -resize 128x128 favicon-128.png