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scala vs java, performance and memory? [closed]
I am keen to look into Scala, and have one basic question I cant seem to find an answer to:
in general, is there a difference in performance and usage of memory between Scala and Java?
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How can I sort a dictionary by key?
...to go from {2:3, 1:89, 4:5, 3:0} to {1:89, 2:3, 3:0, 4:5} ?
I checked some posts but they all use the "sorted" operator that returns tuples.
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How to extract the substring between two markers?
Let's say I have a string 'gfgfdAAA1234ZZZuijjk' and I want to extract just the '1234' part.
18 Answers
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What are your favorite extension methods for C#? (codeplex.com/extensionoverflow)
Let's make a list of answers where you post your excellent and favorite extension methods .
150 Answers
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Functional style of Java 8's Optional.ifPresent and if-not-Present?
In Java 8, I want to do something to an Optional object if it is present, and do another thing if it is not present.
12 A...
通过 ulimit 改善系统性能 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...统的内键功能，它具有一套参数集，用于为由它生成的 shell 进程及其子进程的资源使用设置限制。本文将在后面的章节中详细说明 ulimit 的功能，使用以及它的影响，并以具体的例子来详细地阐述它在限制资源使用方面的影响。...
Should struct definitions go in .h or .c file?
I've seen both full definitions of struct s in headers and just declarations—is there any advantage to one method over the other?
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PHP prepend leading zero before single digit number, on-the-fly [duplicate]
PHP - Is there a quick, on-the-fly method to test for a single character string, then prepend a leading zero?
3 Answers
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Remove duplicate entries using a Bash script [duplicate]
I want to remove duplicate entries from a text file, e.g:
4 Answers
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Loop through list with both content and index [duplicate]
It is very common for me to loop through a python list to get both the contents and their indexes. What I usually do is the following:
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