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Data Modeling with Kafka? Topics and Partitions
...rtitions.
Currently, in Kafka, each broker opens a file handle of both the index and the data file of every log segment. So, the more partitions, the higher that one needs to configure the open file handle limit in the underlying operating system. E.g. in our production system, we once saw an error...
Can JSON start with “[”?
...e to get back a JSONArray object and then you can use get(i) where i is an index from 0 through the returned JSONArray's size()-1.
import java.io.IOException;
import com.ibm.json.java.JSONArray;
import com.ibm.json.java.JSONObject;
public class BookListTest {
public static void main(String[] ar...
What are the details of “Objective-C Literals” mentioned in the Xcode 4.4 release notes?
...ing new subscripting. (Added with literals):
arr[1] === [arr objectAtIndex:1]
dict[@"key"] === [dict objectForKey:@"key"]
[Edit 2]
The new ObjC literals were discussed in multiple WWDC 2012 sessions. I intentionally didn't remove the the filenames and the time of each slide so you can fin...
Referencing a string in a string array resource with xml
...work in the fashion you want. Otherwise android doesnt provides direct XML indexing for xml based arrays.
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dplyr summarise: Equivalent of “.drop=FALSE” to keep groups with zero length in output
...lt;- 3
do the summary:
res <- by_b %>% summarise(count_a = n())
index and replace all occurences of oob_val
res[res == oob_val] <- 0
which gives the intended:
> res
Source: local data frame [3 x 2]
b count_a
1 1 6
2 2 6
3 3 0
...
Difference between Pragma and Cache-Control headers?
...pragma: no-cache directive, so it is advised to use it by OWASP: owasp.org/index.php/…
– Randall Borck
Apr 27 '18 at 18:42
2
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What is the recommended approach towards multi-tenant databases in MongoDB?
...
@Russian How we are going to handle indexing if we are going for opting 1
– Robins Gupta
May 29 '18 at 15:23
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Why am I merging “remote-tracking branch 'origin/develop' into develop”?
...branches (e.g., origin/master). It does NOT touch your working directory, index, or local branches.
The -p argument prunes deleted upstream branches. Thus, if the foo branch is deleted in the origin repository, git remote update -p will automatically delete your origin/foo ref.
git merge --ff-onl...
Solving “Who owns the Zebra” programmatically?
... print key,
for v in sorted(dict(group).keys(), key=variables.index):
print v.ljust(9),
print
if __name__ == '__main__':
solve()
Output:
1 yellow Norwegian cats water Dunhill
2 blue Dane horse tea Blend
3 red ...
What's the role of GetHashCode in the IEqualityComparer in .NET?
...ethod is called on the Key. The hashcode returned is used to determine the index of the bucket in which the Key/Value pair should be stored.
When you want to access the Value, you pass in the Key again. The GetHashCode method is called on the Key, and the bucket containing the Value is located.
Wh...