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Extract a substring according to a pattern
... sub to replace it with a colon first. For example, if the separator were _ then string <- sub("_", ":", string)
c(read.dcf(textConnection(string)))
## [1] "E001" "E002" "E003"
7) separate
7a) Using tidyr::separate we create a data frame with two columns, one for the part before the colon and o...
What framework for MVVM should I use? [closed]
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It really depends on what you are trying to achieve, and how much infrastructure you want in place already, plus the ease with which you can find samples that help you out. I'm going to declare an interest here, because I've been ...
How to Convert JSON object to Custom C# object?
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Since we all love one liners code
Newtonsoft is faster than java script serializer.
... this one depends on the Newtonsoft NuGet package, which is popular and better than the default serializer.
if we have class then use below.
My...
What is an abstract class in PHP?
...re interface. Also interfaces are a special case of abstract classes where ALL methods are abstract.
See this section of the PHP manual for further reference.
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Replacing Spaces with Underscores
I have a PHP Script that users will enter a name like: Alex_Newton ,
12 Answers
12
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Discuz! X3 论坛标题字数突破80的限制 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...，修改语言包文件。
修改的文件一览如下（数据库修改 _forum_post, _forum_rsscache, _forum_thread 这三张表）：
下面详细介绍如何修改：
一、数据库修改，修改数据库标题字段的长度为255字符：运行下面的sql语句：
（注意修改...
Difference between add(), replace(), and addToBackStack()
What is the main difference between calling these methods:
9 Answers
9
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Javascript: Round up to the next multiple of 5
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const fn = _num =>{
return Math.round(_num)+ (5 -(Math.round(_num)%5))
}
reason for using round is that expected input can be a random number.
Thanks!!!
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Calling remove in foreach loop in Java [duplicate]
...all i.next() before you can call i.remove(): docs.oracle.com/javase/6/docs/api/java/util/Iterator.html
– John Mellor
Mar 7 '12 at 15:18
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How to get the seconds since epoch from the time + date output of gmtime()?
... even if I change the system locale, the mktime() called by the web server API still use the old timezone to generate the time object. I have to switch to gmtime() and manually apply the gmt offset.
– Jkm
Aug 31 '16 at 1:41
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