emission | ️ Deprecated repo , moved to artsy/eigen ️ React Native | Frontend Framework library

I have a uniform in my fragment shader and when I try to get the value of the location of the uniform, it returns null.

I checked the spelling and I don't find any spelling error and this uniform is also used in the shader code.

My error is:

error in getUniformLocation([object WebGLProgram], materialAmbient): uniform 'materialAmbient' does not exist in WebGLProgram("unnamed")

This is my code in WebGL to get a uniform location.

I am trying to replicate the example from this tutorial, but using iterparse with elem.clear().

XML example:

I am still trying to learn coding with QML + c++, so the very nature of this code snippet might sound a little bit unpractical. I am trying to write a class that inherits from QQuickView and loads a qml file. Here is my header file:

Basic version info first:

This script plot two graphs. When I delete the # and colour the background, the graph above disappears. Why? How to colour the background? Thank you

I have many request merged in Observable, and I need a Timeout Not for every emission but for complete observable in RXjava. Is it Possible??

I have a data list like this

I have been trying to create a database handler for my logger with the built-in logging library in Python. I tried to do so by subclassing the main logging module's 'Handler' class but it is throwing many errors, when the StreamHandler class is perfectly fine, and it was written just like how my DatabaseHandler class was written.

I have checked the documentation for the logging library and there appears to be no class for creating custom logging handlers. So, I decided to write the DatabaseHandler class without inheriting attributes from the Handler class and the SQLite 3 code threw an error saying that there is no such table as the 'logs' table when I put in the first line to create that table if it didn't exist.

My code:

I have a Postgres table T with 3 columns (w1, w2, occurrences), all three are integers and w1 and w2 are referencing to another table. So basically, there are two foreign keys and a value.
There are about 15 million unique values (indices) that w1 and w2 can become in each row. Currently, T holds around 1.8 billion rows, which are more or less permutations of the indices with the limitation, that - if you think of a symmetric matrix - only one value pair may exist. For example, there may be (252, 13, x) but not (13, 252, x). However, there is no sorting, so (5, 900, x) also may be in T (sorting is done during insert and depends on the value in the referenced table). These tuples (w1, w2) are unique. At the moment, there are 3 different indices on that table, a UNIQUE INDEX tdc_idx_1 on T (w1, w2), a INDEX tdc_idx_w1 on T (w1) and a INDEX tdc_idx_w2 on T (w2).

Basically, I want to run two different queries. The difficulty for me is to figure out where the bad performance comes from, or to accept the runtime given the "complexity" of the query and the table size (I'll guess that is not the case..). Short, I could need help in the structure of the queries and probably the handling of the table indices (or maybe the table design in general).
The most straightforward query for my desired result is