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Given an array of numbers, return array of products of all other numbers (no division)
...t i=0;i<N;++i) {
products[i]=products_below[i]*products_above[i];
}
If you need to be O(1) in space too you can do this (which is less clear IMHO)
int a[N] // This is the input
int products[N];
// Get the products below the current index
p=1;
for(int i=0;i<N;++i) {
products[i]=p;
p*=...
Ruby on Rails production log rotation
...ms log tools.
An example in config/environments/production.rb.
# Use a different logger for distributed setups
config.logger = SyslogLogger.new
That way, you log to syslog, and can use default logrotate tools to rotate the logs.
Option 2: normal Rails logs + logrotate
Another option is to si...
BigDecimal equals() versus compareTo()
... Unlike compareTo, this method considers two BigDecimal objects equal only if they are equal in value and scale (thus 2.0 is not equal to 2.00 when compared by this method).
In other words: equals() checks if the BigDecimal objects are exactly the same in every aspect. compareTo() "only" compares ...
How do I create an array of strings in C?
I am trying to create an array of strings in C. If I use this code:
14 Answers
14
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Proper stack and heap usage in C++?
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No, the difference between stack and heap isn't performance. It's lifespan: any local variable inside a function (anything you do not malloc() or new) lives on the stack. It goes away when you return from the function. If you want som...
Is it bad practice to use Reflection in Unit testing? [duplicate]
...r the special case of unit testing legacy code or an API you can't change. If you are testing your own code, the fact that you need to use Reflection means your design is not testable, so you should fix that instead of resorting to Reflection.
If you need to access private members in your unit test...
Exit a Script On Error
I'm building a Shell Script that has a if function like this one:
5 Answers
5
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How do Mockito matchers work?
...ny , argThat , eq , same , and ArgumentCaptor.capture() ) behave very differently from Hamcrest matchers.
2 Answers
...
Maven command to list lifecycle phases along with bound goals?
... but I can't find an easy way to list the goals associated for each maven lifecycle phase for a given project.
5 Answers
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How to concatenate text from multiple rows into a single text string in SQL server?
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If you are on SQL Server 2017 or Azure, see Mathieu Renda answer.
I had a similar issue when I was trying to join two tables with one-to-many relationships. In SQL 2005 I found that XML PATH method can handle the concatenat...