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Does adding a duplicate value to a HashSet/HashMap replace the previous value
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ah I get it now. I understood that the key is the element of the Set, but just realized that put() will only override the value, not the key. In this case, it's the same value put alongside the key again, which may or may not be better t...
How to unload a package without restarting R
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@AriB.Friedman, now as a question.
– Eric Fail
Jul 9 '13 at 12:41
1
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How to filter rows in pandas by regex
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It may be a bit late, but this is now easier to do in Pandas by calling Series.str.match. The docs explain the difference between match, fullmatch and contains.
Note that in order to use the results for indexing, set the na=False argument (or True if you want...
What does O(log n) mean exactly?
...propriate spot in a new, empty phone book.
For the below examples, we're now at the printer's office. Phone books are waiting to be mailed to each resident or business, and there's a sticker on each phone book identifying where it should be mailed to. Every person or business gets one phone book.
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Shortcut to switch between design and text in Android Studio
Does anyone know some shortcut to switch between design and text in android studio while editing XML layout?
14 Answers
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How to check if the URL contains a given string?
...gex way:
var matches = !!location.href.match(/franky/); //a boolean value now
Or in a simple statement you could use:
if (location.href.match(/franky/)) {
I use this to test whether the website is running locally or on a server:
location.href.match(/(192.168|localhost).*:1337/)
This checks...
String strip() for JavaScript? [duplicate]
... String(this).replace(/^\s+|\s+$/g, '');
};
}
The trim function will now be available as a first-class function on your strings. For example:
" dog".trim() === "dog" //true
EDIT: Took J-P's suggestion to combine the regex patterns into one. Also added the global modifier per Christoph's s...
Why do we need a pure virtual destructor in C++?
...class Base
{
public:
Base();
virtual ~Base() = 0; // Pure virtual, now no one can create the Base Object directly
};
Base::Base() { cout << "Base Constructor" << endl; }
Base::~Base() { cout << "Base Destructor" << endl; }
class Derived : public Base
{
public:
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How to convert a List into a comma separated string without iterating List explicitly [dupli
Now i want an output from this list as 1,2,3,4 without explicitly iterating over it.
13 Answers
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CSS word-wrapping in div
...ext is wider than that i want it to break down. The div is float: left and now has an overflow. I want the scrollbar to go away by using word-wrapping. How can i achieve this?
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