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What does a tilde in angle brackets mean when creating a Java generic class?
I was reading through some JMockit examples and found this code:
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What are markers in Java Logging frameworks and what is a reason to use them?
...This is a rehashed version my answer to the question "Best practices for using Markers in SLF4J/Logback".
Markers can be used to color or mark a single log statement. What you do with these colors, i.e. markers, is entirely up to you. However, two patterns seem to be common for marker usage.
Trig...
How to select rows that have current day's timestamp?
I am trying to select only today's records from a database table.
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Is there common street addresses database design for all addresses of the world? [closed]
... to be honest don't know street address structures of the world, just how in my country is structured :) so which is the best and common database design for storing street addresses? It should be so simple to use, fast to query and dynamic to store all street addresses of the world which is identif...
'await' works, but calling task.Result hangs/deadlocks
I have the following four tests and the last one hangs when I run it. Why does this happen:
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What is Full Text Search vs LIKE
I just read a post mentioning "full text search" in SQL.
6 Answers
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Why does parseInt yield NaN with Array#map?
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The callback function in Array.map has three parameters:
From the same Mozilla page that you linked to:
callback is invoked with three arguments: the value of the element, the index of the element, and the Array object being traversed."
So ...
dplyr: “Error in n(): function should not be called directly”
I am attempting to reproduce one of the examples in the dplyr package but am getting this error message. I am expecting to see a new column n produced with the frequency of each combination. What am I missing? I triple checked that the package is loaded.
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Deprecated warning for Rails 4 has_many with order
I have this model in my rails app which throws warning when I try to create records in console.
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Best way to test SQL queries [closed]
I have run into a problem wherein we keep having complex SQL queries go out with errors. Essentially this results in sending mail to the incorrect customers and other 'problems' like that.
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