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Is Zookeeper a must for Kafka?
... coordination system. So Kafka, Storm, HBase, SolrCloud to just name a few all use Zookeeper to help manage and coordinate.
Kafka is a distributed system and is built to use Zookeeper. The fact that you are not using any of the distributed features of Kafka does not change how it was built. In any ...
Best PHP IDE for Mac? (Preferably free!) [closed]
...wdown on Mac IDE's for PHP
NetBeans
Free! Plus, the best functionality of all offerings. Includes inline database connections, code completion, syntax checking, color coding, split views etc. Downside: It's a memory hog on the Mac. Be prepared to allow half a gig of memory then you'll need to shu...
What is the difference between gsub and sub methods for Ruby Strings
...ticed before. I've been using :gsub and it appears that they are essentially the same. Can anyone explain the difference to me? Thanks!
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Insert Update trigger how to determine if insert or update
I need to write an Insert, Update Trigger on table A which will delete all rows from table B whose one column (say Desc) has values like the value inserted/updated in the table A's column (say Col1). How would I go around writing it so that I can handle both Update and Insert cases. How would I dete...
JavaScript module pattern with example [closed]
... Your first example (function() { /* Your code goes here */}()); is actually a IIFE (Immediately Invoking Function Expression), ok it's anonymous coz it has no name so you may even want to call it an IIAFE (Immediately Invoking Anonymous Function Expression) see more on IIFE on stackoverflow.com/...
How can I process each letter of text using Javascript?
... Note that both the spread operator (first example) and the split call (last example) will create a new array. This won't usually be a problem, but could be costly for large strings or frequent uses.
– Randolpho
Feb 21 '19 at 16:02
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Do you use NULL or 0 (zero) for pointers in C++?
...ded. That's less common these days.
If you have to name the null pointer, call it nullptr; that's what it's called in C++11. Then, nullptr will be a keyword.
That said, don't sweat the small stuff.
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How to run a shell script in OS X by double-clicking?
... to select terminal you need to switch from "Recommended Applications" to "All Applications". (The Terminal.app application can be found in the Utilities folder)
NOTE that unless you don't want to associate all files with this extension to be run in terminal you should not have "Always Open With" c...
Java - removing first character of a string
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Its important to note that this doesn't actually remove the character from the string -- it gives you a new string that has all the characters of the old string except the first one. There's no way to actually modify a string.
– Chris Dodd
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load and execute order of scripts
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If you aren't dynamically loading scripts or marking them as defer or async, then scripts are loaded in the order encountered in the page. It doesn't matter whether it's an external script or an inline script - they are executed in the order the...