Lecture 1: Introduction to Research — [📝Lecture Notebooks] [
Lecture 2: Introduction to Python — [📝Lecture Notebooks] [
Lecture 3: Introduction to NumPy — [📝Lecture Notebooks] [
Lecture 4: Introduction to pandas — [📝Lecture Notebooks] [
Lecture 5: Plotting Data — [📝Lecture Notebooks] [[
# Xcode 4.3.3 | |
Apple clang version 3.1 (tags/Apple/clang-318.0.61) (based on LLVM 3.1svn) | |
Target: x86_64-apple-darwin11.4.0 | |
Thread model: posix | |
# Xcode 4.3.2 | |
Apple clang version 3.1 (tags/Apple/clang-318.0.58) (based on LLVM 3.1svn) | |
Target: x86_64-apple-darwin11.4.0 | |
Thread model: posix |
- More scalable/faster than a blockchain (not enough utxos)
- Much better privacy security model than a blockchain
- Same or better theft security model than TTP but much worse than a blockchain
If it's so great, why hasn't it been done yet?
Receive private payments from anyone on a single static address without requiring any interaction or extra on-chain overhead.
Update: This now has a BIP and WIP implementation
The recipient generates a so-called silent payment address and makes it publicly known. The sender then takes a public key from one of their chosen inputs for the payment, and uses it to derive a shared secret that is then used to tweak the silent payment address. The recipient detects the payment by scanning every transaction in the blockchain.
echo 'export PATH=$HOME/local/bin:$PATH' >> ~/.bashrc | |
. ~/.bashrc | |
mkdir ~/local | |
mkdir ~/node-latest-install | |
cd ~/node-latest-install | |
curl http://nodejs.org/dist/node-latest.tar.gz | tar xz --strip-components=1 | |
./configure --prefix=~/local | |
make install # ok, fine, this step probably takes more than 30 seconds... | |
curl https://www.npmjs.org/install.sh | sh |
# The command finds the most recent tag that is reachable from a commit. | |
# If the tag points to the commit, then only the tag is shown. | |
# Otherwise, it suffixes the tag name with the number of additional commits on top of the tagged object | |
# and the abbreviated object name of the most recent commit. | |
git describe | |
# With --abbrev set to 0, the command can be used to find the closest tagname without any suffix: | |
git describe --abbrev=0 | |
# other examples |
// In the name of Allah. | |
// We're nothing and you're everything. | |
// Ya Ali! | |
#include <bits/stdc++.h> | |
using namespace std; | |
typedef long long ll; | |
const int maxn = 1e2 + 14, lg = 15; |
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A simple Ghostscript command to merge two PDFs in a single file is shown below:
gs -dNOPAUSE -sDEVICE=pdfwrite -sOUTPUTFILE=combine.pdf -dBATCH 1.pdf 2.pdf
Install Ghostscript:
Type the command sudo apt-get install ghostscript
to download and install the ghostscript package and all of the packages it depends on.