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How does Stack Overflow generate its SEO-friendly URLs?
...e it because this function can be called hundreds of times per page.
/// <summary>
/// Produces optional, URL-friendly version of a title, "like-this-one".
/// hand-tuned for speed, reflects performance refactoring contributed
/// by John Gietzen (user otac0n)
/// </summary>
public st...
How can I find the number of days between two Date objects in Ruby?
...oncatenated to the end. yikes! you may want to use to_i to convert the result to an integer
– jwal
Jan 24 '12 at 18:07
9
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HTML if image is not found
...
The best way to solve your problem:
<img id="currentPhoto" src="SomeImage.jpg" onerror="this.onerror=null; this.src='Default.jpg'" alt="" width="100" height="120">
onerror is a good thing for you :)
Just change the image file name and try yourself.
...
How does std::move() transfer values into RValues?
...start with the move function (which I cleaned up a little bit):
template <typename T>
typename remove_reference<T>::type&& move(T&& arg)
{
return static_cast<typename remove_reference<T>::type&&>(arg);
}
Let's start with the easier part - that i...
What is the Git equivalent for revision number?
...
@sdaau: If you are using this in a script or something and want git describe to never fail, use the git describe --always option.
– Greg Hewgill
Apr 21 '13 at 19:52
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MenuItemCompat.getActionView always returns null
...
@jklp I try to add xmlns declaration <menu xmlns:app="http://schemas.android.com/apk/res/android" > but get error Attribute is missing the Android namespace prefix. Do you get it, and how do you fix it?
– anticafe
Feb ...
How do I initialize an empty array in C#?
... the size of in advance, there are better options than arrays.
Use a List<string> instead - it will allow you to add as many items as you need and if you need to return an array, call ToArray() on the variable.
var listOfStrings = new List<string>();
// do stuff...
string[] arrayOfSt...
Show an image preview before upload
...setting the src attribute of an image tag to a data URL:
The html code:
<input type="file" id="files" />
<img id="image" />
The JavaScript code:
document.getElementById("files").onchange = function () {
var reader = new FileReader();
reader.onload = function (e) {
/...
How do I import the javax.servlet API in my Eclipse project?
... libraries which are already provided by the target runtime are marked as <scope>provided</scope>.
Here are some typical exceptions which you can get when you litter the /WEB-INF/lib or even /JRE/lib, /JRE/lib/ext, etc with servletcontainer-specific libraries in a careless attempt to fix...
How do I insert a linebreak where the cursor is without entering into insert mode in Vim?
...
You could also use >> and << to help indenting if you didn't want to go into insert mode with s.
– Conner
Sep 21 '12 at 10:15
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