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Get the IP address of the machine
...hat are assigned to different continents (IANA makes this easy) and accept best two out of three.
– Joshua
Nov 9 '10 at 4:09
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What is a unix command for deleting the first N characters of a line?
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I think awk would be the best tool for this as it can both filter and perform the necessary string manipulation functions on filtered lines:
tail -f logfile | awk '/org.springframework/ {print substr($0, 6)}'
or
tail -f logfile | awk '/org.spring...
MySQL DISTINCT on a GROUP_CONCAT()
...tegories" table for the appropriate many-to-many relationship would be the best practice here, and would add a lot of flexibility. Still, your answer is a smart workaround for anyone who inherits such a denormalized schema. It also could probably be adapted for the purpose of generating a migration ...
Can we write our own iterator in Java?
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The best reusable option is to implement the interface Iterable and override the method iterator().
Here's an example of a an ArrayList like class implementing the interface, in which you override the method Iterator().
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What does extern inline do?
... one, you can add a void foo(void) declaration above. This helps with the "best practice" of writing clean headers, then #includeing a separate file with the inline definitions. Then, if using C-style inlines, #define some macro differently in one dedicated TU to provide the out-of-line definitions....
Algorithm to return all combinations of k elements from n
...s in your set -- 20C3 = 1140. And if you want to iterate over the set it's best to use a modified gray code algorithm so you aren't holding all of them in memory. These generate the next combination from the previous and avoid repetitions. There are many of these for different uses. Do we want to ma...
Nullable type issue with ?: Conditional Operator
...tore null in the variable, not default(DateTime), so this is misleading at best. This is not "versatile" as you imply, since the expression as a whole has still the same type - DateTime, and you can replace default(DateTime) with new DateTime() and it will do the same thing. Maybe default(DateTime?)...
What's the difference between interface and @interface in java?
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One of the best and full answers (yet clear) I've been witnessing on stackoverflow.
– Mr. D
Feb 14 at 15:03
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How to bind multiple values to a single WPF TextBlock?
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best answer for 2019
– Fábio BC Souza
Aug 30 '19 at 16:56
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Remove duplicate rows in MySQL
...u reach (0 rows affected) which is kinda suspicious and here is what works best for me , it's almost the same but it works in one run, I edited the solution
– Nassim
Apr 30 '15 at 13:41
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