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Meaning of Git checkout double dashes
What is the meaning of the double dashes before the file name in this git command?
3 Answers
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How to specialize std::hash::operator() for user-defined type in unordered containers?
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while this is possible, would you in general recommend doing it this way? I'd prefer instantiation unorder_map<eltype, hash, equality> instead, to avoid ruining someone's day with funny ADL business. (Edit Pete Becker's advice on this topic)
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How do I convert a String to an int in Java?
...Alternatively, you can use an Ints method from the Guava library, which in combination with Java 8's Optional, makes for a powerful and concise way to convert a string into an int:
import com.google.common.primitives.Ints;
int foo = Optional.ofNullable(myString)
.map(Ints::tryParse)
.orElse(0)
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Remove all special characters with RegExp
...sired = stringToReplace.replace(/[^\w\s]/gi, '')
As was mentioned in the comments it's easier to do this as a whitelist - replace the characters which aren't in your safelist.
The caret (^) character is the negation of the set [...], gi say global and case-insensitive (the latter is a bit redund...
What is a proper naming convention for MySQL FKs?
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WiX tricks and tips
...h" Type="raw" Root="HKLM" Win64="$(var.Win64)"
Key="Software\Company\Product" Name="InstallLocation" />
</Property>
Note: WiX guru Rob Mensching has posted an excellent blog entry which goes into more detail and fixes an edge case when properties are set from the command li...
What is the difference between NaN and None?
...ut[13]: dtype('O')
In [14]: s_good.dtype
Out[14]: dtype('float64')
Jeff comments (below) on this:
np.nan allows for vectorized operations; its a float value, while None, by definition, forces object type, which basically disables all efficiency in numpy.
So repeat 3 times fast: ob...
What is the difference between Gemfile and Gemfile.lock in Ruby on Rails
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159
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Differences between Agda and Idris
...igh level features such as type classes, do notation, idiom brackets, list comprehensions, overloading and so on. Idris puts high level programming ahead of interactive proof, although because Idris is built on a tactic-based elaborator, there is an interface to a tactic based interactive theorem pr...