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What's the opposite of chr() in Ruby?
In many languages there's a pair of functions, chr() and ord() , which convert between numbers and character values. In some languages, ord() is called asc() .
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Interfaces vs. abstract classes [duplicate]
In C#, when should you use interfaces and when should you use abstract classes? What can be the deciding factor?
4 Answers...
Where is Xcode's build folder?
...ng from a script, I'd like to actually find the build (so I can package it and send via TestFlight :) How do I determine which of the many MyAppName-xxxx-s is the right one? Thanks! (Note to Heath: in this particular case, I don't want to force output with the CONFIGURATION_BUILD_DIR parameter, a...
JSON.Net Self referencing loop detected
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I just had the same problem with Parent/Child collections and found that post which has solved my case.
I Only wanted to show the List of parent collection items and didn't need any of the child data, therefore i used the following and it worked fine:
JsonConvert.SerializeObject(R...
xcode-select active developer directory error
...en xcode-select developer directory was pointing to /Library/Developer/CommandLineTools, when a full regular Xcode was required (happens when CommandLineTools are installed after Xcode)
Solution:
Install Xcode (get it from https://appstore.com/mac/apple/xcode) if you don't have it yet.
Accept th...
How to break out from a ruby block?
...fers control out of the block, out of the iterator that invoked the block, and to the first expression following the invocation of the iterator:
f.each do |line| # Iterate over the lines in file f
break if line == "quit\n" # If this break statement is executed...
puts eval(line)
en...
How to iterate through range of Dates in Java?
...t I need to perform a set of actions through range of dates, given a start and end date.
Please provide me guidance to achieve this using Java.
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Sound alarm when code finishes
I am in a situation where my code takes extremely long to run and I don't want to be staring at it all the time but want to know when it is done.
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Button in a column, getting the row from which it came on the Click event handler
... inherit the datacontext of a row data object. I am calling it as MyObject and hope MyObject.ID is what you wanted.
private void Button_Click(object sender, RoutedEventArgs e)
{
MyObject obj = ((FrameworkElement)sender).DataContext as MyObject;
//Do whatever you wanted to do with MyObject.I...
Will ConfigurationManager.AppSettings[“blah”] throw an exception if “blah” doesn't exist?
...returns null in the following cases: 1) if the specified key is not found; and 2) if the specified key is found and its associated value is null. This property does not distinguish between the two cases.
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