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How do I install pip on macOS or OS X?
...or installing pip (package manager for Python). I can't find a good solution.
21 Answers
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Rails: fields_for with index?
...ite simple as the solution is provided within Rails. You can use f.options params. So, inside your rendered _some_form.html.erb,
Index can be accessed by:
<%= f.options[:child_index] %>
You don't need to do anything else.
Update: It seems that my answer wasn't clear enough...
Original...
C# How can I check if a URL exists/is valid?
... it does not return server or protocol errors
/// </summary>
/// <param name="url">The path to check</param>
/// <returns></returns>
public bool UrlIsValid(string url)
{
try
{
HttpWebRequest request = HttpWebRequest.Create(url) as HttpWebRequest;
...
What is a StackOverflowError?
...s a bad recursive call. Typically, this is caused when your recursive functions doesn't have the correct termination condition, so it ends up calling itself forever. Or when the termination condition is fine, it can be caused by requiring too many recursive calls before fulfilling it.
However, with...
Zooming MKMapView to fit annotation pins?
I am using MKMapView and have added a number of annotation pins to the map about a 5-10 kilometre area. When I run the application my map starts zoomed out to show the whole world, what is the best way to zoom the map so the pins fit the view?
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What are some methods to debug Javascript inside of a UIWebView?
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If you're using iOS >= 6 and you have mountain lion (10.8) or Safari >= 6, you can just:
Open the application in the simulator (or your device in XCode >= 4.5.x).
Open Safari (go to Preferences -> Advanced and make sure "Show D...
Can you have multiline HTML5 placeholder text in a ?
... answered Aug 25 '11 at 11:27
Ionuț G. StanIonuț G. Stan
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How to “EXPIRE” the “HSET” child key in redis?
...filed another field with an
expire time, fetch both, and let the application understand if it is
still valid or not based on current time.
share
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improve this answer
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ByteBuffer.allocate() vs. ByteBuffer.allocateDirect()
To allocate() or to allocateDirect() , that is the question.
4 Answers
4
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How do you load custom UITableViewCells from Xib files?
The question is simple: How do you load custom UITableViewCell from Xib files? Doing so allows you to use Interface Builder to design your cells. The answer apparently is not simple due to memory managment issues. This thread mentions the issue and suggests a solution, but is pre NDA-release and...