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Using Java 8's Optional with Stream::flatMap
The new Java 8 stream framework and friends make for some very concise java code, but I have come across a seemingly-simple situation that is tricky to do concisely.
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Python code to remove HTML tags from a string [duplicate]
...', text)
However, as lvc mentions xml.etree is available in the Python Standard Library, so you could probably just adapt it to serve like your existing lxml version:
def remove_tags(text):
return ''.join(xml.etree.ElementTree.fromstring(text).itertext())
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In Django, how does one filter a QuerySet with dynamic field lookups?
...endswith'): 'Z'
}
Person.objects.filter(**kwargs)
This is a very common and useful Python idiom.
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Convert line-endings for whole directory tree (Git)
...ks to toolbear, here is a one-liner that recursively replaces line endings and properly handles whitespace, quotes, and shell meta chars.
find . -type f -exec dos2unix {} \;
If you're using dos2unix 6.0 binary files will be ignored.
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push_back vs emplace_back
I'm a bit confused regarding the difference between push_back and emplace_back .
7 Answers
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How to find the mime type of a file in python?
...stance in BLOBs. Let's say you want to dish these files out via a web page and have the client automatically open the correct application/viewer.
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Kotlin secondary constructor
...defined in a companion object
Sometimes you want your constructor private and only a factory method available to clients. For now this is only possible with a factory method defined in a companion object:
class C private (s: Int) {
companion object {
fun new(s: String) = C(s.length)
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Convert Python dictionary to JSON array
...our script.
# -*- coding: UTF-8 -*-
This will fix some Unicode problems and make your life easier.
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rails + MySQL on OSX: Library not loaded: libmysqlclient.18.dylib
I'm just starting out with Ruby (and rails). I did the setup according to http://ruby.railstutorial.org/ruby-on-rails-tutorial-book#sec:ruby gems, using rvm . I have everything working well with sqlite.
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const vs constexpr on variables
... = 3.141592653589793;
constexpr double PI2 = 3.141592653589793;
Both PI1 and PI2 are constant, meaning you can not modify them. However only PI2 is a compile-time constant. It shall be initialized at compile time. PI1 may be initialized at compile time or run time. Furthermore, only PI2 can be...