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npm global path prefix
...l run without sudo would not be able to deposit links into /usr/local/bin/ etc.
– Steven Lu
Feb 12 '13 at 20:50
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show 9 more comments
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Getting raw SQL query string from PDO prepared statements
...bugging. Assumes anonymous parameters from
* $params are are in the same order as specified in $query
*
* @param string $query The sql query with parameter placeholders
* @param array $params The array of substitution parameters
* @return string The interpolated query
*/
public static functio...
Backwards migration with Django South
...en you run ./manage.py migrate your_app, South runs all new migrations, in order. (It looks at the database tables to decide which ones are 'new').
However, you can also specify any migration by number, and South will migrate your database, either forward or backward, to take it to that point. So, ...
“Use the new keyword if hiding was intended” warning
...ace IShow and implements its method ShowData. Class B inherits Class A. In order to use ShowData method in Class B, we have to use keyword new in the ShowData method in order to hide the base class Class A method and use override keyword in order to extend the method.
interface IShow
{
protect...
Typical AngularJS workflow and project structure (with Python Flask)
...tic
|-- css
|-- img
|-- js
|-- app.js, controllers.js, etc.
|-- lib
|-- angular
|-- angular.js, etc.
|-- partials
|-- templates
|-- index.html
Make sure your index.html includes AngularJS, as well as any other files:
<script src="static/lib/a...
What is “callback hell” and how and why does RX solve it?
...e from event handling code. You can easily handle details like async event ordering that are a nightmare when using state variables. I found RX was the cleanest implementation to perform a new network request after 3 network responses returned or to error handle the whole chain if one does not retur...
Dynamically updating plot in matplotlib
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In order to do this without FuncAnimation (eg you want to execute other parts of the code while the plot is being produced or you want to be updating several plots at the same time), calling draw alone does not produce the plot ...
Why use bzero over memset?
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+1. That memset violates a common parameter ordering of "buffer, buffer_size" makes it particularly error-prone IMO.
– jamesdlin
Aug 20 '13 at 8:53
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Find unused npm packages in package.json
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If you're using a Unix like OS (Linux, OSX, etc) then you can use a combination of find and egrep to search for require statements containing your package name:
find . -path ./node_modules -prune -o -name "*.js" -exec egrep -ni 'name-of-package' {} \;
If you search ...
Why does GCC generate such radically different assembly for nearly the same C code?
...dern compilers" fill in the blank, do the best job, make the fastest code, etc. Actually I saw gcc get worse from 3.x to 4.x on arm at least. 4.x might have caught up to 3.x by this point, but early on it produced slower code. With practice you can learn how to write your code so the compiler doe...