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Resize image proportionally with MaxHeight and MaxWidth constraints
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I just thinking about a case, i don't sure if it possible or not that after multiply with ratio the width Or height might still larger than max width or max height.
– Sarawut Positwinyu
Jun 28 '11 at 10:37
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Is it possible to make the -init method private in Objective-C?
...at any time.
What you can do is throw an NSInternalInconsistencyException if your -init method is invoked:
- (id)init {
[self release];
@throw [NSException exceptionWithName:NSInternalInconsistencyException
reason:@"-init is not a valid initializer for th...
How to match “anything up until this sequence of characters” in a regular expression?
...
You didn't specify which flavor of regex you're using, but this will
work in any of the most popular ones that can be considered "complete".
/.+?(?=abc)/
How it works
The .+? part is the un-greedy version of .+ (one or more ...
Retrieving a List from a java.util.stream.Stream in Java 8
...is that the code as it stands (forEach(targetLongList::add)) would be racy if the stream was parallel. Even then, it will not achieve the effect intended, as forEach is explicitly nondeterministic—even in a sequential stream the order of element processing is not guaranteed. You would have to use ...
Converting unix timestamp string to readable date
... datetime module:
from datetime import datetime
ts = int("1284101485")
# if you encounter a "year is out of range" error the timestamp
# may be in milliseconds, try `ts /= 1000` in that case
print(datetime.utcfromtimestamp(ts).strftime('%Y-%m-%d %H:%M:%S'))
...
Play audio file from the assets directory
...ptor(),afd.getStartOffset(),afd.getLength());
Your version would work if you had only one file in the assets
directory. The asset directory contents are not actually 'real files'
on disk. All of them are put together one after another. So, if you do
not specify where to start and how many...
Declaring Multiple Variables in JavaScript
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If you're writing code that you expect to minify or pack later, the second way allows compressors (like the YUI Compressor) to give you a more minified version. If size is a consideration, then I would suggest following as m...
What is the use of Enumerable.Zip extension method in Linq?
...ip operator merges the corresponding elements of two sequences using a specified selector function.
var letters= new string[] { "A", "B", "C", "D", "E" };
var numbers= new int[] { 1, 2, 3 };
var q = letters.Zip(numbers, (l, n) => l + n.ToString());
foreach (var s in q)
Console.WriteLine(s);
...
如何选择机器学习算法 - 大数据 & AI - 清泛网移动版 - 专注IT技能提升
如何选择机器学习算法Choosing-a-Machine-Learning-Classifier机器学习 算法如何针对某个分类问题决定使用何种机器学习算法？ 当然，如果你真心在乎准确率，最好的途径就是测试一大堆各式各样的算法（同时确保在每个算法上也测试...
如何选择机器学习算法 - 大数据 & AI - 清泛网移动版 - 专注IT技能提升
如何选择机器学习算法Choosing-a-Machine-Learning-Classifier机器学习 算法如何针对某个分类问题决定使用何种机器学习算法？ 当然，如果你真心在乎准确率，最好的途径就是测试一大堆各式各样的算法（同时确保在每个算法上也测试...