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Why does range(start, end) not include end?
...s which equals len(range(0, 10)). Remember that programmers prefer 0-based indexing.
Also, consider the following common code snippet:
for i in range(len(li)):
pass
Could you see that if range() went up to exactly len(li) that this would be problematic? The programmer would need to explicitl...
WiX tricks and tips
... a look at the schema for validity wix.sourceforge.net/manual-wix3/schema_index.htm
– si618
Apr 2 '09 at 14:57
+1, wi...
Difference between HBase and Hadoop/HDFS
...t type of storage might be more appropriate.HBase stores data in MapFiles (indexed SequenceFiles), and is a good choice if you need to do MapReduce style streaming analyses with the occasional random look up
– Ravindra babu
Jan 21 '16 at 2:34
...
Add new row to dataframe, at specific row-index, not appended?
... 17
3 3 8 13 18
4 1 2 3 4
41 4 9 14 19
5 5 10 15 20
(Note we index r differently).
And finally, benchmarks:
library(microbenchmark)
microbenchmark(
rbind(existingDF[1:r,],newrow,existingDF[-(1:r),]),
insertRow(existingDF,newrow,r)
)
Unit: microseconds
...
Is it possible to pass a flag to Gulp to have it run tasks in different ways?
...... and ended up with this utility function:
function getArg(key) {
var index = process.argv.indexOf(key);
var next = process.argv[index + 1];
return (index < 0) ? null : (!next || next[0] === "-") ? true : next;
}
It eats an argument-name and will search for this in process.argv. If not...
Yii2 data provider default sorting
...
This solution works but the search in index doesn't work now.
– Roby Sottini
Nov 16 '17 at 12:14
add a comment
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Performing regex Queries with pymongo
...o that regex's anchored at the start (ie: starting with ^) are able to use indexes in the db, and will run much faster in that case.
– drevicko
Aug 13 '13 at 23:31
1
...
How to append to a file in Node?
...e.log(new Date().toISOString());
[...Array(10000)].forEach( function (item,index) {
fs.appendFile("append.txt", index+ "\n", function (err) {
if (err) console.log(err);
});
});
console.log(new Date().toISOString());
Up to 8000 on my computer, you can append data to the file, then y...
Why can't I assign a *Struct to an *Interface?
...r i := 0; i < events.Len(); i++ {
sb.Events[i] = events.Index(i).Interface()
}
}
}
return sb
}
As you can see above the Storyboard.go is consuming just Events []interface{} but in-fact Im sending is a Struct pointer and it works fine.
another more e...
What to add for the update portion in ConcurrentDictionary AddOrUpdate
...t @user438331 asks about, I think the solution in my answer using a simple indexer is better.
– Niklas Peter
Sep 26 '15 at 10:33
7
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