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How to sum array of numbers in Ruby?
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Ken Iverson introduced the operator / called "reduction operator" in the programming language APL. Source: Iverson, Kenneth. 1962. A Programming Language. Wiley. Another source: "Notation as a Tool of Thought", 1979 ACM Turing Award Lecture, Kenneth E. Iverson,...
Beautiful Soup and extracting a div and its contents by ID
Why does this NOT return the <div id="articlebody"> ... </div> tags and stuff in between? It returns nothing. And I know for a fact it exists because I'm staring right at it from
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How do I preview emails in Rails?
...riables the template expects.
This could be done with fixtures, but I typically prefer to just grab some pseudo-random real data. Remember - this is NOT a unit test - this is purely a development aid. It doesn't need to produce the same result every single time - in fact - it's probably better if...
Checking if an instance's class implements an interface?
... an interface. You don't know if the object is a class that happens to be called IInterface.
You can also use the reflection API in PHP to test this more specifically:
$class = new ReflectionClass('TheClass');
if ($class->implementsInterface('IInterface'))
{
print "Yep!\n";
}
See http://ph...
完美解决phpcms批量移动内容后，新闻心情、评论排行等不更新的问题 - 更多...
...空链接了（原url已删除了）。
原因：内容移动后，catid发生了变化，而comment、mood相关的表中catid没有更新。
解决方法：只需修改一个文件搞定 phpcms/modules/content/content.php
/**
* 批量移动文章
*/
public fun...
Difference Between One-to-Many, Many-to-One and Many-to-Many?
... One Person Has Many Skills, a Skill is not reused between Person(s)
Unidirectional: A Person can directly reference Skills via its Set
Bidirectional: Each "child" Skill has a single pointer back up to the
Person (which is not shown in your code)
Many-to-Many: One Person Has Many Skil...
css ellipsis on second line
... does not exists.
There is a jQuery plugin that is very easy to use, it is called dotdotdot.
It uses the container's width and height to calculate if it needs to truncate and add ellipsis.
$("#multilinedElement").dotdotdot();
Here is a jsFiddle.
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How to determine MIME type of file in android?
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First and foremost, you should consider calling MimeTypeMap#getMimeTypeFromExtension(), like this:
// url = file path or whatever suitable URL you want.
public static String getMimeType(String url) {
String type = null;
String extension = MimeTypeMap.getFi...
Delete duplicate records in SQL Server?
Consider a column named EmployeeName table Employee . The goal is to delete repeated records, based on the EmployeeName field.
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How can I delete all of my Git stashes at once?
...inal has nothing to do with it. git isn't a daemon; it only runs when you call it. It has no idea you closed the terminal.
– DylanYoung
Jan 9 '19 at 13:28
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