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These fine folks make it possible to run The Daily WTF.
Frederick A sends us a bit of null checking code, and offers us a better solution.
class ConferenceService
{
/// <summary>
/// Checks if conference is active
/// </summary>
public bool IsCalling()
{
try
{
return m_ConnectionService.Core.State.IsWebRTCConnected;
}
catch
{
return false;
}
}
}
Frequent submitter Capybara James sends us this simple snippet, which highlights that even when you have the lovely convenience of Optional types, you can use them wrong.
if (StringUtils.hasLength(dto.getAssetModelUUID())
// Other conditions
) {
return Optional.ofNullable(dto);
}
Flat-file style databases were designed to fit the constraints of the systems they were running on. You specify your schema in terms of "how many characters in a file we use to store this data", meaning something like this: JOHN SMITH 12343rd StAnytown PA12345 is read in my knowing that the first name field is 8 characters wide, the last name field is 8 characters wide, the street number is 4 digits, and so on.
It's also a terrible schema, and woe to anyone with a long name. But many a mainframe had a similar schema.
I've never been a huge fan of their furniture but I will happily demolish a plate of meatballs.
Jan agrees "My loyalty to this Swedish megastore is immeasurable."
Killian Brendel was looking through the .NET source code, and found this comment on the TimeSpan struct.
// TimeSpan represents a duration of time. A TimeSpan can be negative
// or positive.
//
// TimeSpan is internally represented as a number of milliseconds. While
// this maps well into units of time such as hours and days, any
// periods longer than that aren't representable in a nice fashion.
// For instance, a month can be between 28 and 31 days, while a year
// can contain 365 or 364 days. A decade can have between 1 and 3 leapyears,
// depending on when you map the TimeSpan into the calendar. This is why
// we do not provide Years() or Months().
Today, we look at a "representative comment" from Mark W. This particular comment appears on a function:
/// <summary>
/// Does something wonderful.
/// </summary>
Windows Presentation Foundation, the XML-based UI framework for Windows, has its own "fun" quirks. One of its core ideas is that controls can be data-bound: that text box is linked to a numeric field in your model class. Type a different number, and the model automagically updates.
That's fine for what it is, but of course you're going to need to give it some instructions on how to do those kinds of conversions for your own custom types. And that's where the IValueConverter interface comes in.