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How does “do something OR DIE()” work in PHP?
...pp to access a MySQL database, and on a tutorial, it says something of the form
4 Answers
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Why doesn't C have unsigned floats?
... would be sometimes using an unsigned float and not realizing that your performance has just been killed. If C++ supported it then every floating point operation would need to be checked to see if it is signed or not. And for programs that do millions of floating point operations, this is not acce...
List of special characters for SQL LIKE clause
... sets, such as [a-f]
or [abcdef].Specifier can take two forms:
rangespec1-rangespec2:
rangespec1 indicates the start of a range of characters.
- is a special character, indicating a range.
rangespec2 indic...
“git diff” does nothing
...es, then there is no output.
git diff [--options] [--] […]
This form is to view the changes you made relative to the index (staging area for the next commit). In other words, the differences are what you could tell git to further add to the index but you still haven't.
See the documenta...
Declare slice or make slice?
...building an API and return an array as the response, using the declarative form will return nil in case your slice doesn't have any element, rather than an empty array. However, if make is used to create the slice, an empty array will be returned instead, which is generally the desired effect.
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How to use LINQ to select object with minimum or maximum property value
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The performance will drag you down. I learnt it the hard way. If you want the object with the Min or Max value, then you do not need to sort the entire array. Just 1 scan should be enough. Look at the accepted answer or look at Mor...
Viewing a Deleted File in Git
...xchange.using('gps', function() { StackExchange.gps.track('embedded_signup_form.view', { location: 'question_page' }); });
$window.unbind('scroll', onScroll);
}
};
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How do I parse a string into a number with Dart?
...ssert(myDouble is double);
print(myDouble); // 123.45
parse() will throw FormatException if it cannot parse the input.
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What are the differences between a HashMap and a Hashtable in Java?
...tter for non-threaded applications, as unsynchronized Objects typically perform better than synchronized ones.
Hashtable does not allow null keys or values. HashMap allows one null key and any number of null values.
One of HashMap's subclasses is LinkedHashMap, so in the event that you'd want predi...
Can I store the .git folder outside the files I want tracked?
... the work tree and creates a filesystem agnostic git symbolic link (in the form of a file named .git) in the root of the work tree. I think the result is identical to niks' answer.
git init --separate-git-dir path/to/repo.git path/to/worktree
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