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Setting git parent pointer to a different parent
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Using git rebase. It's the generic "take commit(s) and plop it/them on a different parent (base)" command in Git.
Some things to know, however:
Since commit SHAs involve their parents, when you change the parent of a given commit, its SHA will change - as will the SHAs of ...
Combining node.js and Python
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For communication between node.js and Python server, I would use Unix sockets if both processes run on the same server and TCP/IP sockets otherwise. For marshaling protocol I would take JSON or protocol buffer. If threaded Python shows up to be a bottleneck, ...
What's the best way to set a single pixel in an HTML5 canvas?
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There are two best contenders:
Create a 1×1 image data, set the color, and putImageData at the location:
var id = myContext.createImageData(1,1); // only do this once per page
var d = id.data; // only do this once per page
d[0] = r;
d[1] = g;
d[2] = b;
d[3] = a;
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Python argparse mutual exclusive group
...ns within the group mutually exclusive.
What you're looking for is subcommands. Instead of prog [ -a xxxx | [-b yyy -c zzz]], you'd have:
prog
command 1
-a: ...
command 2
-b: ...
-c: ...
To invoke with the first set of arguments:
prog command_1 -a xxxx
To invoke with the sec...
Upgrading Node.js to latest version
So, I have Node.js installed and now when I tried to install Mongoosejs I got an error telling me that I don't have the needed version of Node.js (I have v0.4.11 and v0.4.12 is needed).
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How does LMAX's disruptor pattern work?
I am trying to understand the disruptor pattern . I have watched the InfoQ video and tried to read their paper. I understand there is a ring buffer involved, that it is initialized as an extremely large array to take advantage of cache locality, eliminate allocation of new memory.
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How to generate a random number between a and b in Ruby?
To generate a random number between 3 and 10, for example, I use: rand(8) + 3
8 Answers
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Compiling Java 7 code via Maven
...the mvn script in your maven installation to see how it's building the command. Perhaps you or someone else has hard-coded a JAVA_HOME in there and forgotten about it.
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Cached, PHP generated Thumbnails load slowly
...ised by David got my bounty, albeit making my site only 3% faster overall, and while not answering the site's main bottleneck. Time for for clarification of my question, and, another bounty:
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Key hash for Android-Facebook app
I'm working on an Android app, in which I want to integrate a Facebook
posting feature. I downloaded the Facebook-Android SDK, and I got
the readme.md (text file) in there, in which it is mentioned to generate
the key hash for Android. How do I generate it?
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