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C# Interfaces. Implicit implementation versus Explicit implementation
...explicit implementation of at least one interface member is implementing multiple interfaces that have members with the same signature but different return types. This can happen because of interface inheritance, as it does with IEnumerator<T>.Current, IEnumerable<T>.GetEnumerator(), an...
Hash function that produces short hashes?
...able hash algorithm (eg. SHA-1), which will give you a slightly longer result than what you need. Simply truncate the result to the desired length, which may be good enough.
For example, in Python:
>>> import hashlib
>>> hash = hashlib.sha1("my message".encode("UTF-8")).hexdigest...
What is the type of lambda when deduced with “auto” in C++11?
...ned, there is no such thing as "a name the compiler decides upon". The result of type_info::name() is implementation-defined, so it may return anything. In practice, the compiler will name the type for the sake of the linker.
– avakar
Oct 31 '11 at 19:46
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Should I use document.createDocumentFragment or document.createElement
...f continues to exist but now has no children.
This allows you to insert multiple nodes into the DOM at the same time:
var frag = document.createDocumentFragment();
var textNode = frag.appendChild(document.createTextNode("Some text"));
var br = frag.appendChild(document.createElement("br"));
var bo...
'this' vs $scope in AngularJS controllers
...nce is in play) are accessible from the HTML/view. E.g., from ng-click, filters, etc.
Long answer:
A controller function is a JavaScript constructor function. When the constructor function executes (e.g., when a view loads), this (i.e., the "function context") is set to the controller object. ...
How to 'grep' a continuous stream?
...this for GNU grep (used on pretty much any Linux) as it will flush by default (YMMV for other Unix-likes such as SmartOS, AIX or QNX).
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What is the difference between #import and #include in Objective-C?
... need. For example, one of my source files might look like this:
#import <Foundation/Foundation.h>
#include <asl.h>
#include <mach/mach.h>
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<% %> - is for inline code (especially logic flow)
<%$ %> - is for evaluating expressions (like resource variables)
<%@ %> - is for Page directives, registering assemblies, importing namespaces, etc.
<%= %...
How to open a second activity on click of button in android app
... button click. just add this line.
android:onClick="sendMessage"
xml:
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="sendMessage"
android:text="@string/button" />
In your ...
What's the difference between @JoinColumn and mappedBy when using a JPA @OneToMany association
... @OneToMany(fetch = FetchType.LAZY, mappedBy = "company")
private List<Branch> branches;
}
@Entity
public class Branch {
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "companyId")
private Company company;
}
...