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Combine the first two commits of a Git repository?
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A was the initial commit, but now you want B to be the initial commit. git commits are whole trees, not diffs even if they are normally described and viewed in terms of the diff that they introduce.
This recipe works even if there are multiple commits be...
Explicitly calling return in a function or not
...l was originally asking (why explicit return is bad). And I would like to know right (the one right for anyone) answer as well :). Do you consider to provide your explanation for users of this site?
– Petr Matousu
Mar 30 '17 at 8:53
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How do I update/upsert a document in Mongoose?
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Mongoose now supports this natively with findOneAndUpdate (calls MongoDB findAndModify).
The upsert = true option creates the object if it doesn't exist. defaults to false.
var query = {'username': req.user.username};
req.newData.u...
LINQ's Distinct() on a particular property
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EDIT: This is now part of MoreLINQ.
What you need is a "distinct-by" effectively. I don't believe it's part of LINQ as it stands, although it's fairly easy to write:
public static IEnumerable<TSource> DistinctBy<TSource, TKey>...
What is Unicode, UTF-8, UTF-16?
... by only two bytes, in a region called the Basic Multilingual Plane (BMP). Now a character encoding is needed to access this character set, and as the question asks, I will concentrate on UTF-8 and UTF-16.
Memory considerations
So how many bytes give access to what characters in these encodings?
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Why is exception handling bad?
...hose statements just randomly doesn't run, you end up in a world of pain. Now take away locks and concurrency, and think about each method like that. Think of each method as a transaction of permutations on object state, if you will. At the start of your method call, the object should be clean st...
Creating a daemon in Linux
...essful. -> Because the parent process has terminated, the child process now runs in the background.
setsid - Create a new session. The calling process becomes the leader of the new session and the process group leader of the new process group. The process is now detached from its controlling term...
Are there constants in JavaScript?
...swer is still highly ranked by Google in 2015 it should be said that it is now obsolete. The const keyword is now officially part of the language and is supported by every browser. According to statcounter.com only a few percent of internet users still use old browser versions that didn't support co...
Swift and mutating struct
...e manner with proper performance. They may add this feature later, but not now at least.
For Objective-C programmers, mutable/immutable concepts are very familiar. In Objective-C we had two separated classes for each concept, but in Swift, you can do this with one struct. Half work.
For C/C++ prog...
How can prepared statements protect from SQL injection attacks?
...t exactly true. MySQL has supported prepared statements for quite a while now. The PDO driver has as well. But yet, MySQL queries were still prepared by PDO by default, last time i checked.
– cHao
Aug 18 '13 at 9:32
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