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Best way to serialize an NSData into a hexadeximal string
...ocoa way to serialize an NSData object into a hexadecimal string. The idea is to serialize the deviceToken used for notification before sending it to my server.
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How to complete a git clone for a big project on an unstable connection?
...clone process already stopped working, and no way to get it running again. Is there some way to have a more failure-resistant git clone download?
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std::unique_ptr with an incomplete type won't compile
...sewhere
~foo(); // Implement (with {}, or with = default;) where impl is complete
};
because otherwise the compiler generates a default one, and it needs a complete declaration of foo::impl for this.
If you have template constructors, then you're screwed, even if you don't construct the impl...
What's faster, SELECT DISTINCT or GROUP BY in MySQL?
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They are essentially equivalent to each other (in fact this is how some databases implement DISTINCT under the hood).
If one of them is faster, it's going to be DISTINCT. This is because, although the two are the same, a query optimizer would have to catch the fact that your GROU...
How to indent a few lines in Markdown markup?
...the 6th column. I.e. I don't want the code block formatting rule to make this chunk of text look like code as I'll use other formatting like bold face, etc. How to do that in Markdown?
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NoSQL (MongoDB) vs Lucene (or Solr) as your database
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This is a great question, something I have pondered over quite a bit. I will summarize my lessons learned:
You can easily use Lucene/Solr in lieu of MongoDB for pretty much all situations, but not vice versa. Grant Ingersoll'...
What is the preferred/idiomatic way to insert into a map?
...ot found, and return a reference to which you assign a value. Obviously, this can be inefficient if the mapped_type can benefit from being directly initialized instead of default constructed and assigned. This method also makes it impossible to determine if an insertion has indeed taken place or if ...
Verifying a specific parameter with Moq
...g Moq and struggling a bit.
I'm trying to verify that messageServiceClient is receiving the right parameter, which is an XmlElement, but I can't find any way to make it work. It works only when I don't check a particular value.
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How to concatenate twice with the C preprocessor and expand a macro as in “arg ## _ ## MACRO”?
...are dependent on the value of a certain macro variable with a macro like this:
2 Answers
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UICollectionView reloadData not functioning properly in iOS 7
I've been updating my apps to run on iOS 7 which is going smoothly for the most part. I have noticed in more than one app that the reloadData method of a UICollectionViewController isn't acting quite how it used to.
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