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What is the difference between LR, SLR, and LALR parsers?
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+100
SLR, LALR and LR parsers can all be implemented using exactly the same table-driven machinery.
Fundamentally, the parsing algorit...
Position of least significant bit that is set
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170
Bit Twiddling Hacks offers an excellent collection of, er, bit twiddling hacks, with performan...
Python unittests in Jenkins?
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174
sample tests:
tests.py:
# tests.py
import random
try:
import unittest2 as unittest
exce...
Fast way of finding lines in one file that are not in another?
...lines in each file. I am trying to find a fast way of finding lines in file1 that are not present in file2.
11 Answers
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Trying to understand CMTime and CMTimeMake
1) CMTimeMake(1,10) means duration of 1 second and timescale of 10, or 10 frames per second. This means 1s duration of video with 10 frames?
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What does $.when.apply($, someArray) do?
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162
.apply is used to call a function with an array of arguments. It takes each element in the ar...
mongodb count num of distinct values per field/key
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199
MongoDB has a distinct command which returns an array of distinct values for a field; you can ...
How can I delete one element from an array by value
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15 Answers
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Simple way to transpose columns and rows in SQL?
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146
There are several ways that you can transform this data. In your original post, you stated tha...
“Conversion to Dalvik format failed with error 1” on external JAR
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71 Answers
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