Simple authentication for Firebase database

Simple rules for enabling authentication on Firebase database.

{
  "rules": {
      ".read": "auth !== null",
      ".write": "auth !== null"
   }
}

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Fix Unfold3D in Maya LT 2017 Bonus Tools

If you are getting this error in Maya:

Cannot find procedure "Unfold3D"

there are few possible solutions:

• Make sure Unfold3D plugin is loaded.
• If plugin is loaded, edit file

  bt_autoUnwrapUVTool.mel
  

  in maya's script directory and make sure that all references to Unfold3D are replaced

  "Unfold3D -u" to "u3dUnfold"
  "Unfold3D -o" to "u3dOptimize"
  

  After edit, to avoid restarting Maya, load script with command

  source "bt_autoUnwrapUVTool.mel"
  

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How to move pivot point in Maya

Simple MEL script to move pivot point for selection to worlds 0,0,0 point.

string $sel[] = `ls -sl`;
string $mesh;

for ($mesh in $sel)
{
    move 0 0 0 ($mesh + ".scalePivot") ($mesh + ".rotatePivot");
}

Useful, when moving levels to game engine.
P.S. Doesn't work for groups. You have to select meshes inside group yourself.

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Disabling Clang warning

If you have a line where you are sure warning is not needed and want to disable it, use this pragma:

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wmultichar"

char b = 'df'; // no warning.

#pragma clang diagnostic pop

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Improving cout performance

If cout performs badly and there are no calls to printf, you can turn off iostream syncing with stdio

ios::sync_with_stdio(false);

Also replace ::endl calls with '\n'. So you are not flushing with every line.

// BAD
std::cout << "This is my line" << std::endl;
// GOOD
std::cout << "This is my line\n";

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Adding prettify support to "Dynamic theme" in blogger

Open theme customization --> Advanced tab --> Add CSS
Paste this CSS if you like it, or customize your own:

/* Curonian pretty-printing styles. Used with prettify.js.  */
 
pre .str, code .str { color: #DB312F; } /* string literal */
pre .kwd, code .kwd { color: #268AD1; } /* keyword */
pre .com, code .com { color: #B3AE9D; font-style: italic; } /* comment */
pre .typ, code .typ { color: #859900; } /* type */
pre .lit, code .lit { color: #D33682; } /* literal value.  e.g. 1, null, true */
pre .pun, code .pun { color: #647B83; } /* punctuation string */
pre .pln, code .pln { color: #647B83; } /* plain text */
 
pre .tag, code .tag { color: #FF0000; } /* sgml tag */
pre .dec, code .dec { color: #FF0000; } /* markup declaration such as a DOCTYPE */
pre .atn, code .atn { color: #FF0000; font-weight: normal;} /* sgml attribute name */
pre .atv, code .atv { color: #FF0000; } /* sgml attribute value */
pre .src, code .src { color: #FF0000;} /* embedded source */
 
pre.prettyprint, code.prettyprint {
  font-family:"Lucida Console", Monaco, monospace;
  font-weight: normal;
  font-size: 8pt;
  background-color: #FDF6E2;
  -moz-border-radius: 2px;
  -webkit-border-radius: 2px;
  -o-border-radius: 2px;
  -ms-border-radius: 2px;
  -khtml-border-radius: 2px;
  border-radius: 2px;
}
 
pre.prettyprint {
  width: 95%;
  margin: 5px 0px;
  padding: 2px; border: 1px solid #EDE8D4;;
  white-space: pre-wrap;
}

/* Specify class=linenums on a pre to get line numbering */
ol.linenums { margin-top: 0; margin-bottom: 0; color: #647B83; } /* IE indents via margin-left */
li.L0,li.L1,li.L2,li.L3,li.L5,li.L6,li.L7,li.L8 { list-style-type: none }
/* Alternate shading for lines */
li.L1,li.L3,li.L5,li.L7,li.L9 { }

@media print {
  pre.prettyprint { background-color: none }
  pre .str, code .str { color: #060 }
  pre .kwd, code .kwd { color: #006; font-weight: bold }
  pre .com, code .com { color: #600; font-style: italic }
  pre .typ, code .typ { color: #404; font-weight: bold }
  pre .lit, code .lit { color: #044 }
  pre .pun, code .pun { color: #440 }
  pre .pln, code .pln { color: #000 }
  pre .tag, code .tag { color: #006; font-weight: bold }
  pre .atn, code .atn { color: #404 }
  pre .atv, code .atv { color: #060 }
}

Now go back to blogger and switch to edit HTML. At the end of head tag add these lines

<!-- Pretty print support start -->
<link href="http://google-code-prettify.googlecode.com/svn/trunk/src/prettify.css" rel="stylesheet" type="text/css"/>
<script src="http://google-code-prettify.googlecode.com/svn/trunk/src/prettify.js" type="text/javascript" />
<script language="javascript" type="text/javascript">
    $(window.blogger.ui()).on('viewitem', function (event, post, element) {
        prettyPrint();
    });
</script>
<!-- Pretty print support end -->

Save & close your template.

Now when you want to include source code in your post - put it inside pre tags. Like this:

<pre class="prettyprint">
    /*
    * Put your code here
    */
</pre>

You can find more information on usage over at prettify project website here: http://code.google.com/p/google-code-prettify/

Also thank you to Jeffery To over at stackoverflow for JS function which makes it all work nicely inside blogger.

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.gitignore file for Xcode 4/5

Original post on stackoverflow: http://stackoverflow.com/questions/49478/git-ignore-file-for-xcode-projects

My own forked gist (updated for Xcode 5): https://gist.github.com/curonian/6761653

-- Update --
Here's quick Terminal command to downloading this:

curl https://gist.github.com/curonian/6761653/raw/ -o .gitignore
git add .gitignore
git commit -m "Adding gitignore file"
git push -u origin master

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