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Java 8 Distinct by property
... returns a predicate that maintains state about what it's seen previously, and that returns whether the given element was seen for the first time:
public static <T> Predicate<T> distinctByKey(Function<? super T, ?> keyExtractor) {
Set<Object> seen = ConcurrentHashMap.new...
How to split a column into two columns?
I have a data frame with one column and I'd like to split it into two columns, with one column header as ' fips' and the other 'row'
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Is BCrypt a good hashing algorithm to use in C#? Where can I find it? [closed]
...irst, some terms that are important:
Hashing - The act of taking a string and producing a sequence of characters that cannot be reverted to the original string.
Symmetric Encryption - (Usually just referred to as 'encryption') - The act of taking a string and producing a sequence of characters tha...
Changing git commit message after push (given that no one pulled from remote)
I have made a git commit and subsequent push. I would like to change the commit message. If I understand correctly, this is not advisable because someone might have pulled from the remote repository before I make such changes. What if I know that no one has pulled?
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How to check sbt version?
...t to use sbt about that (copying Mark Harrah's comment):
The about command was added recently to try to succinctly print the
most relevant information, including the sbt version.
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In what cases will HTTP_REFERER be empty
...e user changed it? Is getting an empty one the same as getting a null one? and under what circumstances do I get that too?
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Show all Elasticsearch aggregation results/buckets and not just 10
... possible aggs, what would be the difference between setting 0 (max_value) and 10000(Some big upper limit)?
– batmaci
Apr 21 '17 at 12:04
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How do you use colspan and rowspan in HTML tables?
I don't know how to merge rows and columns inside HTML tables.
11 Answers
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How do I rename a local Git branch?
...name a remote branch, as described in Rename master branch for both local and remote Git repositories .
33 Answers
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tooltips for Button
...ossible to create a tooltip for an html button. Its the normal HTML button and there is no Title attribute as it is there for some html controls. Any thoughts or comments?
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