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How to convert string representation of list to a list?
...thon literal structures: strings, numbers, tuples, lists, dicts, booleans, and None.
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Android Studio: how to remove/update the “Created by” comment added to all new classes?
By default Android Studio automatically adds a header comment to all new classes, e.g.
9 Answers
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Where does R store packages?
...all.packages() function in R is the automatic unzipping utility that gets and install packages in R.
4 Answers
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What is an efficient way to implement a singleton pattern in Java? [closed]
...pt that it is more concise, provides the serialization machinery for free, and provides an ironclad guarantee against multiple instantiation, even in the face of sophisticated serialization or reflection attacks. While this approach has yet to be widely adopted, a single-element enum type is the bes...
How to serialize an Object into a list of URL query parameters?
... also work, which pulls the functioning param method out of jQuery to be standalone.
– Wes
May 13 '19 at 19:51
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How does password salt help against a rainbow table attack?
I'm having some trouble understanding the purpose of a salt to a password. It's my understanding that the primary use is to hamper a rainbow table attack. However, the methods I've seen to implement this don't seem to really make the problem harder.
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String concatenation: concat() vs “+” operator
Assuming String a and b:
11 Answers
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Is it better in C++ to pass by value or pass by constant reference?
...l types, except for builtin types (char, int, double, etc.), for iterators and for function objects (lambdas, classes deriving from std::*_function).
This was especially true before the existence of move semantics. The reason is simple: if you passed by value, a copy of the object had to be made an...
Can I start the iPhone simulator without “Build and Run”?
I want to delete an app in the simulator before I "build and run". How can I start the simulator so I can do the deletion? If I start it by "build and run" I get a long log output that takes a while because of a bug I'm trying to fix. I'd like to avoid that.
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Add a background image to shape in XML Android
...erlist:
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item>
<shape android:shape="rectangle" android:padding="10dp">
<corners
android:bottomRightRadius="5dp"
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