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The most efficient way to implement an integer based power function pow(int, int)
... no efficient algorithms to find this optimal sequence of multiplications. From Wikipedia:
The problem of finding the shortest addition chain cannot be solved by dynamic programming, because it does not satisfy the assumption of optimal substructure. That is, it is not sufficient to decompose th...
How can I get browser to prompt to save password?
...eliably, some browsers do not trigger the "remember" feature if you submit from Javascript.
– JustAMartin
Dec 8 '17 at 15:46
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show 2 more c...
Java 8 method references: provide a Supplier capable of supplying a parameterized result
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It appears that you can throw only RuntimeException from the method orElseThrow. Otherwise you will get an error message like MyException cannot be converted to java.lang.RuntimeException
Update:- This was an issue with an older version of JDK. I don't see this issue wit...
Testing two JSON objects for equality ignoring child order in Java
...objects ignoring child order, specifically for unit testing JSON returning from a web service.
25 Answers
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What are the differences between “generic” types in C++ and Java?
...arrays and such.
Java doesn't work like that. In Java all objects extent from java.lang.Object so, pre-Generics, you'd write code like this:
public class PhoneNumbers {
private Map phoneNumbers = new HashMap();
public String getPhoneNumber(String name) {
return (String)phoneNumbers.get(n...
Apache Commons equals/hashCode builder [closed]
...out hashCode(), the same applies to equals())
Note (inspired by Comment from kayahr)
Objects.hashCode(..) (just as the underlying Arrays.hashCode(...)) might perform badly if you have many primitive fields. In such cases, EqualsBuilder may actually be the better solution.
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Rails bundle install production only
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Bundle install command is totally independent from Rails. It just looks into your Gemfile, it doesn't care what libraries your application actually requires in the mentioned config. In fact, you can skip Bundler.require and require libs manually from any group. I agree, ...
How to check if a python module exists without importing it
...oss this question while searching for a way to check if a module is loaded from the command line and would like to share my thoughts for the ones coming after me and looking for the same:
Linux/UNIX script file method: make a file module_help.py:
#!/usr/bin/env python
help('modules')
Then ...
How to properly reuse connection to Mongodb across NodeJs application and modules
...p another instance of the connection or simply use the existing connection from source?
– Farhan Ahmad
Feb 9 '15 at 2:59
20
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How to build a framework or library for other developers, the secure way? [closed]
...helpful for any iOS developer. So we're seriously thinking about switching from app development to framework/library development.
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