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How can I check if a key exists in a dictionary? [duplicate]
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has_key is deprecated, removed in python 3, and half as fast in python 2
– aaronasterling
Oct 2 '10 at 11:10
7
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Choosing a stand-alone full-text search server: Sphinx or SOLR? [closed]
...larities:
Both Solr and Sphinx satisfy all of your requirements. They're fast and designed to index and search large bodies of data efficiently.
Both have a long list of high-traffic sites using them (Solr, Sphinx)
Both offer commercial support. (Solr, Sphinx)
Both offer client API bindings for se...
targetContentOffsetForProposedContentOffset:withScrollingVelocity without subclassing UICollectionVi
...set the UICollectionView's declaration rate to UIScrollViewDecelerationRateFast.
– Clay Ellis
Dec 25 '15 at 6:35
3
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Speed comparison with Project Euler: C vs Python vs Erlang vs Haskell
...p for Haskell and gcc -O3 -lm for C.
Your C routine runs in 8.4 seconds (faster than your run probably because of -O3)
The Haskell solution runs in 36 seconds (due to the -O2 flag)
Your factorCount' code isn't explicitly typed and defaulting to Integer (thanks to Daniel for correcting my misdiagno...
How to deal with a slow SecureRandom generator?
... for a SecureRandom PRNG. Uncommon Maths can't gather true random data any faster than SecureRandom, although it can connect to the internet to download seed data from a particular website. My guess is that this is unlikely to be faster than /dev/random where that's available.
If you want a PRNG, d...
Is memcached a dinosaur in comparison to Redis? [closed]
...tead of looking at this issue from the perspective getting down the who is faster at the < 100 ms range, look at the performance per "class" of the software.
Does it use only local ram? -> fastest
Does it use remote ram? -> fast
Does it use ram plus hardddisk -> oh hurm.
Does it use on...
How to exit a function in bash
...re shell.
# So we (ab)use a different feature. :)
fail() { : "${__fail_fast:?$1}"; }
nested-func() {
try-this || fail "This didn't work"
try-that || fail "That didn't work"
}
nested-func
}
Trying it out:
$ do-something-complex
try-this: command not found
bash: __fail_fast: ...
Is there a way to iterate over a dictionary?
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Yes, NSDictionary supports fast enumeration. With Objective-C 2.0, you can do this:
// To print out all key-value pairs in the NSDictionary myDict
for(id key in myDict)
NSLog(@"key=%@ value=%@", key, [myDict objectForKey:key]);
The alternate met...
Detect if an element is visible with jQuery [duplicate]
...ed many times in the same document. That particular case is up to 17 times faster now!
Keep in mind that even with this improvement, selectors like :visible and :hidden can be expensive because they depend on the browser to determine whether elements are actually displaying on the page. That may req...
Evenly distributing n points on a sphere
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The Fibonacci sphere algorithm is great for this. It is fast and gives results that at a glance will easily fool the human eye. You can see an example done with processing which will show the result over time as points are added. Here's another great interactive example made by @g...