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How to undo 'git reset'?
What's the simplest way to undo the
4 Answers
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postgres: upgrade a user to be a superuser?
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ALTER USER myuser WITH SUPERUSER;
You can read more at the Documentation
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Is there a benefit to defining a class inside another class in Python?
What I'm talking about here are nested classes. Essentially, I have two classes that I'm modeling. A DownloadManager class and a DownloadThread class. The obvious OOP concept here is composition. However, composition doesn't necessarily mean nesting, right?
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Replace selector images programmatically
I have an ImageView that has a drawable image resource set to a selector. How do I programmatically access the selector and change the images of the highlighted and non-highlighted state?
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What does “mro()” do?
...Follow along...:
>>> class A(object): pass
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>>> A.__mro__
(<class '__main__.A'>, <type 'object'>)
>>> class B(A): pass
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>>> B.__mro__
(<class '__main__.B'>, <class '__main__.A'>, <type 'object'>)
>>> class C(A): pass...
string c_str() vs. data()
...aces that the difference between c_str() and data() (in STL and other implementations) is that c_str() is always null terminated while data() is not.
As far as I have seen in actual implementations, they either do the same or data() calls c_str() .
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C++ equivalent of Java's toString?
I'd like to control what is written to a stream, i.e. cout , for an object of a custom class. Is that possible in C++? In Java you could override the toString() method for similar purpose.
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How do you work with an array of jQuery Deferreds?
...hat requires data be loaded in a certain order: the root URL, then the schemas, then finally initialize the applim>cat m>ion with the schemas and urls for the various data objects. As the user navigates the applim>cat m>ion, data objects are loaded, validated against the schema, and displayed. As the user C...
WaitAll vs WhenAll
What is the difference between Task.WaitAll() and Task.WhenAll() from the Async CTP ?
Can you provide some sample code to illustrate the different use cases ?
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How to use jQuery in chrome extension?
I am writing a chrome extension. And I want to use jQuery in my extension. I am not using any background page , just a background script .
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