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How to initialize a dict with keys from a list and empty value in Python?
...dict.fromkeys([1, 2, 3], []), all of the keys are mapped to the same list, and modifying one will modify them all.
– charleslparker
Jun 26 '13 at 16:47
11
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How to send emails from my Android application?
I am developing an application in Android. I don't know how to send an email from the application?
21 Answers
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Not able to access adb in OS X through Terminal, “command not found”
I have installed Android SDK and Eclipse on my Mac system. I am able to program using Eclipse and have created few sample applications. But I am still not able to access adb through the terminal window. I have tried following command in terminal:
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Get The Current Domain Name With Javascript (Not the path, etc.)
...
and window.location.hostname if you don't want to get the port (like http://localhost:3000/, window.location.host = 'localhost:3000' and window.location.hostname = 'localhost'
– Guilherme
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Why should I avoid multiple inheritance in C++?
...ated as MI) smells, which means that usually, it was done for bad reasons, and it will blow back in the face of the maintainer.
Summary
Consider composition of features, instead of inheritance
Be wary of the Diamond of Dread
Consider inheritance of multiple interfaces instead of objects
Sometimes, ...
In MySQL what does “Overhead” mean, what is bad about it, and how to fix it?
...x paths, defragmenting, etc. is
what is known as OPTIMIZATION in mysql
and other terms in other databases.
For example, IBM DB2/400 calls it
REORGANIZE PHYSICAL FILE MEMBER.
It's kind of like changing the oil in
your car or getting a tune-up. You may
think you really don't have to, ...
How to check if a variable is set in Bash?
...ar+x} is a parameter expansion which evaluates to nothing if var is unset, and substitutes the string x otherwise.
Quotes Digression
Quotes can be omitted (so we can say ${var+x} instead of "${var+x}") because this syntax & usage guarantees this will only expand to something that does not requ...
Best way to compare 2 XML documents in Java
...tion that basically translates a custom message format into an XML message and sends it out the other end. I've got a good set of input/output message pairs so all I need to do is send the input messages in and listen for the XML message to come out the other end.
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How do I check if a type is a subtype OR the type of an object?
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Here's the options:
Use Type.IsSubclassOf
Use Type.IsAssignableFrom
is and as
Type.IsSubclassOf
As you've already found out, this will not work if the two types are the same, here's a sample LINQPad program that demonstrates:
void Main()
{
typeof(Derived).IsSubclassOf(typeof(Base)).Dump(...
Qt c++ aggregate 'std::stringstream ss' has incomplete type and cannot be defined
... postfix: "",
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