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Apache Kafka vs Apache Storm
...at has distributed real time processing abilities, meaning you can execute all kind of manipulations on real time data in parallel.
The common flow of these tools (as I know it) goes as follows:
real-time-system --> Kafka --> Storm --> NoSql --> BI(optional)
So you have your real time...
Get person's age in Ruby
... of someone born on the 29th February on a leap year. This is because the call to birthday.to_date.change(:year => now.year) creates an invalid date.
I used the following code instead:
require 'date'
def age(dob)
now = Time.now.utc.to_date
now.year - dob.year - ((now.month > dob.month |...
is there a Java equivalent to null coalescing operator (??) in C#? [duplicate]
...
Guava has a method that does something similar called MoreObjects.firstNonNull(T,T).
Integer x = ...
int y = MoreObjects.firstNonNull(x, -1);
This is more helpful when you have something like
int y = firstNonNull(calculateNullableValue(), -1);
since it saves you from...
Do Swift-based applications work on OS X 10.9/iOS 7 and lower?
...sents the type of the variable and the second occurrence after the = sign calls the constructor (initializes the variable).
– ComFreek
Jun 6 '14 at 8:42
...
My pull request has been merged, what to do next?
...tories you contribute to'.
It is easier to:
delete your fix branch (actually, it is now deleted for you) on your fork (and in your local cloned repo: see "Delete a Git branch both locally and remotely")
git pull upstream master (if master was the branch in which your fix has been integrated: the ...
Difference between “change” and “input” event for an `input` element
...st browsers when content is changed and
the element loses focus. It's basically an aggregate of changes. It will not fire for every single change as in the case input event.
The input event fires synchronously on change of the content for the element. As such, the event listener tends to fire more f...
Why does google.load cause my page to go blank?
...e_thread/thread/e07c2606498094e6
Using one of the ideas, you could use a callback for the load to force it use append rather than doc.write:
setTimeout(function(){google.load('visualization', '1', {'callback':'alert("2 sec wait")', 'packages':['corechart']})}, 2000);
This demonstrates the 2 seco...
How can I delete one element from an array by value
...
I personally like [1, 2, 3, 4, 5] - [3] which results in => [1, 2, 4, 5] from irb.
– Travis
Apr 5 '12 at 19:31
...
How to highlight cell if value duplicate in same column for google spreadsheet?
... Assuming A1 is a criterion for the equation, doesn't this formula compare all cells in range to A1?
– mafonya
Sep 17 '15 at 10:28
9
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Changing git commit message after push (given that no one pulled from remote)
...ill be destroyed.
A note about modifying history
The destroyed data is really just the old commit message, but --force doesn't know that, and will happily delete other data too. So think of --force as "I want to destroy data, and I know for sure what data is being destroyed." But when the destro...