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Last iteration of enhanced for loop in java
...thing about this is that it will work with any Iterable - you can't always index things. (The "add the comma and then remove it at the end" is a nice suggestion when you're really using StringBuilder - but it doesn't work for things like writing to streams. It's possibly the best approach for this e...
convert '1' to '0001' in JavaScript [duplicate]
...' in JavaScript without using any 3rd party libraries. I have done this in php using spritf: $time = sprintf('%04.0f',$time_arr[$i]);
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Using ECMAScript 6
...Babel, and will have their own Chrome flag.
Using Arrow functions
This question specifically mentioned using arrow functions. Arrow functions are now natively supported in all browsers except IE and Opera Mini. See caniuse.
It used to be a little difficult if you wanted to play with arrow func...
linux 下巧妙使用squid代理服务器 - 更多技术 - 清泛网 - 专注C/C++及内核技术
linux 下巧妙使用squid代理服务器一、代理服务器简介： 代理服务器是目前网络中常见的服务器之一，它可以提供文件缓存、复制和地址过滤等服务，充分利用有限的出口带宽，加 一、代理服务器
简介：
代理服务器是目前网...
Transposing a 2D-array in JavaScript
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array[0].map((_, colIndex) => array.map(row => row[colIndex]));
map calls a provided callback function once for each element in an array, in order, and constructs a new array from the results. callback is invoked only for indexes of t...
belongs_to through associations
...n. You're better off caching the question_id on Choice and adding a unique index to the table (especially because validates_uniqueness_of is prone to race conditions).
If you're paranoid, add a custom validation to Choice that confirms that the answer's question_id matches, but it sounds like the e...
What is the shortest way to pretty print a org.w3c.dom.Document to stdout?
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While easier, this approach requires Xerces
– Pace
Nov 1 '12 at 15:32
3
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jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class
...ommand line useful in tracking down the offending jar file. it creates an index of all the class files in all the jars in the folder. Execute from within the lib folder of your deployed app, then search the index.txt file for the offending class.
for /r %X in (*.jar) do (echo %X & jar -tf %X)...
.NET data structures: ArrayList, List, HashTable, Dictionary, SortedList, SortedDictionary — Speed,
...re a fixed size collection that you can change the value stored at a given index.
SortedDictionary is an IDictionary that is sorted based on the keys.
SortedList is an IDictionary that is sorted based on a required IComparer.
So, the IDictionary implementations (those supporting KeyValuePairs) ar...
Should we pass a shared_ptr by reference or by value?
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This question has been discussed and answered by Scott, Andrei and Herb during Ask Us Anything session at C++ and Beyond 2011. Watch from 4:34 on shared_ptr performance and correctness.
Shortly, there is no reason to pass by valu...