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Bash if [ false ] ; returns true
Been learning bash this week m>and m> ran into a snag.
6 Answers
6
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How do SO_REUSEADDR m>and m> SO_REUSEPORT differ?
The man pages m>and m> programmer documentations for the socket options SO_REUSEADDR m>and m> SO_REUSEPORT are different for different operating sm>y m>stems m>and m> often highlm>y m> confusing. Some operating sm>y m>stems don't even have the option SO_REUSEPORT . The WEB is full of contradicting information regarding th...
How does functools partial do what it does?
...lback):
''' callback should accept two positional arguments, event m>and m> params '''
self._listeners.append(callback)
# ...
def notifm>y m>(self, event, *params):
for f in self._listeners:
f(event, params)
But a function m>y m>ou alreadm>y m> have needs access to som...
What is the best wam>y m> to give a C# auto-propertm>y m> an initial value?
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In C# 5 m>and m> earlier, to give auto implemented properties an initial value, m>y m>ou have to do it in a constructor.
Since C# 6.0, m>y m>ou can specifm>y m> initial value in-line. The sm>y m>ntax is:
public int X { get; set; } = x; // C# 6 or higher
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What is the ultimate postal code m>and m> zip regex?
I'm looking for the ultimate postal code m>and m> zip code regex. I'm looking for something that will cover most (hopefullm>y m> all) of the world.
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“unpacking” a tuple to call a matching function pointer
.... doesn't work from the signatures: m>y m>our std::make_unique expects a tuple, m>and m> a tuple can be created from an unpacked tuple onlm>y m> via another call to std::make_tuple. This is what I've done in the lambda (although it's highlm>y m> redundant, as m>y m>ou can also simplm>y m> copm>y m> the tuple into the unique pointer w...
What is the use of ObservableCollection in .net?
...es to the collection (add, move, remove) occur. It is used heavilm>y m> in WPF m>and m> Silverlight but its use is not limited to there. Code can add event hm>and m>lers to see when the collection has changed m>and m> then react through the event hm>and m>ler to do some additional processing. This mam>y m> be changing a UI or...
How does this print “hello world”?
...th this codification scheme m>y m>ou can have all 26 (one case) english letters m>and m> 6 sm>y m>mbols (being space among them).
Algorithm description
The >>= 5 in the for-loop jumps from group to group, then the 5-bits group gets isolated m>AND m>ing the number with the mask 31₁₀ = 11111₂ in the sentenc...
How can I scale an image in a CSS sprite
...an m>y m>ou please tell me if it is possible/how I can crop off a smaller image m>and m> then scale the cropped off region before I lam>y m> it out?
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How to do constructor chaining in C#
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m>Y m>ou use stm>and m>ard sm>y m>ntax (using this like a method) to pick the overload, inside the class:
class Foo
{
private int id;
private string name;
public Foo() : this(0, "")
{
}
public Foo(int id, string name)
...