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What is the right way to check for a null string in Objective-C?
...dOfClass:[NSNull class]] is pointlessly complex since [NSNull null] is documented to be a singleton so you can just check for pointer equality. See Topics for Cocoa: Using Null.
So a good test might be:
if (title == (id)[NSNull null] || title.length == 0 ) title = @"Something";
Note how you can ...
configure Git to accept a particular self-signed server certificate for a particular https remote
...stead, he has set up Git to be accessible via an https:// URL (and username/password authentication). The server for this URL presents a self-signed certificate, so he advised everyone to turn off certificate validation. This does not strike me as a good setup, security-wise.
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Detailed 500 error message, ASP + IIS 7.5
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I have come to the same problem and fixed the same way as Alex K.
So if "Send Errors To Browser" is not working set also this:
Error Pages -> 500 -> Edit Feature Settings -> "Detailed Errors"
Also note that if the conten...
How do I globally configure RSpec to keep the '--color' and '--format specdoc' options turned on
...ll. With the user dir config file, we can easily adopt to different environments.
– Christoph Petschnig
May 23 '14 at 7:14
2
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Escape double quotes in parameter
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Actually ^ didn't work for me, but \ did, per this answer: stackoverflow.com/questions/2403647/…
– kalenjordan
Aug 16 '12 at 22:05
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how do I initialize a float to its max/min value?
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You can use std::numeric_limits which is defined in <limits> to find the minimum or maximum value of types (As long as a specialization exists for the type). You can also use it to retrieve infinity (and put a - in front for negative inf...
How can I delete a newline if it is the last character in a file?
I have some files that I'd like to delete the last newline if it is the last character in a file. od -c shows me that the command I run does write the file with a trailing new line:
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How do you attach and detach from Docker's process?
...art the container with the cleanup flag (--rm). This might be obvious to some, but it bites me more often than I would like to admit.
– allingeek
Nov 12 '14 at 7:43
7
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How can I update a single row in a ListView?
... ListView which displays news items. They contain an image, a title and some text. The image is loaded in a separate thread (with a queue and all) and when the image is downloaded, I now call notifyDataSetChanged() on the list adapter to update the image. This works, but getView() is getting ca...