hrldcpr

One-line Tree in Python

Using Python's built-in defaultdict we can easily define a tree data structure:

def tree(): return defaultdict(tree)

That's it!

bertbalcaen

ffmpeg -i shame-run.mov -r 24/1 test/output%03d.jpg

ialhashim

			//Eigen::MatrixXd src = pointsToMatrix(pointsA[i]);
			//Eigen::MatrixXd dst = pointsToMatrix(pointsB[j]);
			//Eigen::Matrix4d cR_t = Eigen::umeyama(src, dst, true);
			//Eigen::Matrix4d R_t = Eigen::umeyama(src, dst, false);
			//Eigen::Matrix3d R = R_t.block(0,0,3,3);
			//Eigen::Vector3d t = R_t.block(0,3,3,1);

ctokheim

Cython

Cython has two major benefits:

1. Making python code faster, particularly things that can't be done in scipy/numpy
2. Wrapping/interfacing with C/C++ code

Cython gains most of it's benefit from statically typing arguments. However, statically typing is not required, in fact, regular python code is valid cython (but don't expect much of a speed up). By incrementally adding more type information, the code can speed up by several factors. This gist just provides a very basic usage of cython.

JesseScott

Leó Stefánsson

prophetgoddess

# The MIT License (MIT)

# Copyright (c) 2014 Lycaon (lycaon.me)

# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:

staceymakes

#include <Adafruit_NeoPixel.h>

#define NUM_PIXELS 60
unsigned long interval=50;  // the time we need to wait
unsigned long previousMillis=0;

uint32_t currentColor;// current Color in case we need it
uint16_t currentPixel = 0;// what pixel are we operating on

johnpaulmanoza

#import <GPUImageThreeInputFilter.h>

extern NSString *const kGPUImageFourInputTextureVertexShaderString;

@interface GPUImageFourInputFilter : GPUImageThreeInputFilter
{
    GPUImageFramebuffer *fourthInputFramebuffer;
    
    GLint filterFourthTextureCoordinateAttribute;
    GLint filterInputTextureUniform4;

xoppa

#ifdef GL_ES
#define LOWP lowp
precision mediump float;
#else
#define LOWP
#endif

const float offset = 1.0 / 128.0;
varying vec2 v_texCoords;
uniform sampler2D u_texture;

omarojo

self.rawG8OutputTarget = [[GPUImageRawDataOutput alloc] initWithImageSize: aspectSize resultsInBGRAFormat:YES];

[filterChain.output addTarget:self.rawG8OutputTarget];

__weak GPUImageRawDataOutput *weakRawOutput = self.rawG8OutputTarget;
[self.rawG8OutputTarget setNewFrameAvailableBlock:^{
    GLubyte *outputBytes = [weakRawOutput rawBytesForImage];
    NSInteger bytesPerRow = [weakRawOutput bytesPerRowInOutput];
    //I use this variables to create the image to be streamed.
}];