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Remove all special characters from a string in R?
How to remove all special characters from string in R and replace them with spaces ?
3 Answers
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Difference between GIT and CVS
...in the middle, the repository can be left in an inconsistent state. In Git all operations are atomic: either they succeed as whole, or they fail without any changes.
Changesets. Changes in CVS are per file, while changes (commits) in Git they always refer to the whole project. This is very important...
Detect if the app was launched/opened from a push notification
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I am getting the call to application:didReceiveRemoteNotification: after tapping the notification regardless of whether the app is just in the background or not running at all so this answer suits my needs perfectly. Tested on iOS 7 & 8
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Hidden Features of Java
...en I first discovered it, never heard of it before.
ThreadLocals are typically not so widely known as a way to store per-thread state.
Since JDK 1.5 Java has had extremely well implemented and robust concurrency tools beyond just locks, they live in java.util.concurrent and a specifically interest...
appending array to FormData and send via AJAX
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add all type inputs to FormData
const formData = new FormData();
for (let key in form) {
Array.isArray(form[key])
? form[key].forEach(value => formData.append(key + '[]', value))
: formData.append(key, for...
Difference between Java Enumeration and Iterator
...n Enumeration:
Iterators differ from
enumerations in two ways:
Iterators allow the caller to remove elements from the underlying
collection during the iteration with
well-defined semantics.
Method names have been improved.
The bottom line is, both Enumeration and Iterator will give successive el...
MFC CListCtrl使用方法详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...风格为report相关类及处理函数MFC：CListCtrl类SDK：以 ListView_开头的一些宏。如 ListView_InsertCol
以下未经说明，listctrl默认view 风格为report
相关类及处理函数
MFC：CListCtrl类
SDK：以 “ListView_”开头的一些宏。如 ListView_InsertColumn
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When should use Readonly and Get only properties
...during the construction of an object (in the constructor).
private string _name = "Foo"; // field for property Name;
private bool _enabled = false; // field for property Enabled;
public string Name{ // This is a readonly property.
get {
return _name;
}
}
public bool Enabled{ // This is ...
Add property to anonymous type after creation
...soft.com/en-us/library/… does the same thing, but it's built into System.Web.Mvc.HtmlHelper.
– Mir
Dec 17 '12 at 21:55
1
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Replace all whitespace characters
I want to replace all occurrences of white space characters (space, tab, newline) in JavaScript.
How to do so?
9 Answer...