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What are the best practices for using a GUID as a primary key, specifically regarding performance?
...on - using INT vs. GUID as Primary and Clustering Key:
Base Table with 1'000'000 rows (3.8 MB vs. 15.26 MB)
6 nonclustered indexes (22.89 MB vs. 91.55 MB)
TOTAL: 25 MB vs. 106 MB - and that's just on a single table!
Some more food for thought - excellent stuff by Kimberly Tripp - read it, read ...
Why isn't `int pow(int base, int exponent)` in the standard C++ libraries?
...y decision they make. For example, the opportunity cost of buying that $10,000 uber-gaming machine is cordial relations (or probably all relations) with your other half for about six months.
Eric Gunnerson explains this well with his -100 points explanation as to why things aren't always added to M...
Filter rows which contain a certain string
...6.480 1.513 16.195 0.248
# 1 str_detect 10 10.891 1.000 9.594 1.281
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Why is the minimalist, example Haskell quicksort not a “true” quicksort?
...plexity of the original algorithm. Not even close. That's why it is over 1,000x slower than Sedgewick's genuine Quicksort in C.
– J D
May 27 '16 at 17:34
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Boost Statechart vs. Meta State Machine
...allpark numbers:
Most current PC hardware will easily cope with >100'000 events per second
Even very resource-constrained hardware will be able to process a few hundred events per second.
Regarding CPU load, if the number of events to process is much lower than these numbers, Boost.Statechar...
Control the dashed border stroke length and distance between strokes
....com/wLdVc.png") 2 round;
Complete example
Note the border: dashed 4px #000 fallback. Non-supporting browsers will receive this border.
.bordered {
display: inline-block;
padding: 20px;
/* Fallback dashed border
- the 4px width here is overwritten with the border-image-width (...
What causes and what are the differences between NoClassDefFoundError and ClassNotFoundException?
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The last sentence * 1,000,000: So if you ever see a NCDFE with no root cause, you need to see if you can track back to the very first time the class was loaded to find the cause of the error.
– batwad
Feb 6 '...
Does Parallel.ForEach limit the number of active threads?
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No, it won't start 1000 threads - yes, it will limit how many threads are used. Parallel Extensions uses an appropriate number of cores, based on how many you physically have and how many are already busy. It allocates work for each core and the...
Why does Date.parse give incorrect results?
.../ 1 January, 1970
In my timezone (EST, which is -05:00), the result is 18000000 because that's how many ms are in 5 hours (it's only 4 hours during daylight savings months). The value will be different in different time zones. This behaviour is specified in ECMA-262 so all browsers do it the same ...
Why does this method print 4?
...
Ubuntu 12.04 server with default java and default-jdk. Xss starting at 70,000 at 1 byte increments to 460,000.
The results are available at: https://www.google.com/fusiontables/DataSource?docid=1xkJhd4s8biLghe6gZbcfUs3vT5MpS_OnscjWDbM
I've created another version where every repeated data point is...