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How to compare objects by multiple fields
...thenComparing(Person::getLastName, Comparator.nullsFirst(Comparator.naturalOrder())) - first field selector, then comparator
– gavenkoa
May 30 '18 at 14:22
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With MySQL, how can I generate a column containing the record index in a table?
... People should be aware that this row number is calculated before any ordering takes place, so the numbers may become jumbled up if the order changes the row order.
– Grim...
Nov 8 '12 at 14:20
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What is Java Servlet?
...b server inside the web server itself. If you want something looking like PHP or ASP you need JSPs (which are a special kind of servlets)
– Thorbjørn Ravn Andersen
Aug 27 '11 at 10:20
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Asynchronous vs synchronous execution, what does it really mean? [closed]
...nd you.
ASYNCHRONOUS
You are in a restaurant with many other people. You order your food. Other people can also order their food, they don't have to wait for your food to be cooked and served to you before they can order.
In the kitchen restaurant workers are continuously cooking, serving, and tak...
File name? Path name? Base name? Naming standard for pieces of a path
...of using references that forces to scroll up. I make an edit by the way in order to improve that. Grettings
– Victor
Feb 13 '14 at 20:09
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How to call an external command?
...at you want in a CGI script. The problem is not specific to Python; in the PHP community the problems are the same.
The solution is to pass DETACHED_PROCESS Process Creation Flag to the underlying CreateProcess function in Windows API.
If you happen to have installed pywin32, you can import the fla...
SQL - Select first 10 rows only?
...yTable
select top 100 colA, colB from myTable
In MySQL, use:
select ... order by num desc limit 10
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How to implement has_many :through relationships with Mongoid and mongodb?
...seful with MongoDB because it does not support join queries. Therefore, in order to model a many-many relationship in a non-RDBMS database like MongoDB, you use a field containing an array of 'foreign' keys on either side.
class Contact
include Mongoid::Document
has_and_belongs_to_many :practic...
How to git log in reverse order?
I recently learned that I can get hg log to print the history in reverse order with:
5 Answers
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Should I return a Collection or a Stream?
... also some other cases that have good parallelization support, such as non-ordered generated streams (e.g., Stream.generate). However, where Streams is a poor fit is the reactive use case, where the data arrives with random latency. For that, I would suggest RxJava.
– Brian G...