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Python: using a recursive algorithm as a generator
...hat returns string[i],string[:i]+string[i+1:] pairs. Then it would be: for letter,rest in first_letter_options(string): for perm in getPermuations(rest): yield letter+perm
– Thomas Andrews
Oct 14 '16 at 19:04
...
jQuery: what is the best way to restrict “number”-only input for textboxes? (allow decimal points)
...ert that what the user is typing is being rejected. Simply not showing the letters will make all-too-many people think their keyboard is broken. perhaps subtly change the background or border colour.. just as long as the user knows that your app is actually doing something.
– n...
Mercurial Eclipse Plugin
...alEclipse
Update site: https://bitbucket.org/mercurialeclipse/update-site/raw/default/
Installation manual
As stated below (in comments) the name is MercurialEclipse. The name HgEclipse was a fork that Intland did and was later "merged" back again with MercurialEclipse, which moved around a bit ...
error: cannot dynamic_cast ‘b’ (of type ‘class Base*’) to type ‘c...
...{
T _val;
public:
Derived() {}
Derived(T val): _val(val) {}
T raw() {return _val;}
};
int main()
{
Base * b = new Derived<int>(1);
Derived<int> * d = dynamic_cast<Derived<int>* >(b);
cout << d->raw() << endl;
return 0;
}
dynamic_cast
Why do I need 'b' to encode a string with Base64?
..., base64 encoding has to do the encoding in the opposite direction (so the raw data is converted to 'dGVzdA') and also has a rule to tell other applications how much space is left off at the end. This is done by padding the end with '=' symbols. So, the base64 encoding of this data is 'dGVzdA==', wi...
SQLAlchemy IN clause
...
An alternative way is using raw SQL mode with SQLAlchemy, I use SQLAlchemy 0.9.8, python 2.7, MySQL 5.X, and MySQL-Python as connector, in this case, a tuple is needed. My code listed below:
id_list = [1, 2, 3, 4, 5] # in most case we have an integer l...
Trusting all certificates using HttpClient over HTTPS
... be hard to take care of all certificates, you'd better know the implicit drawbacks to trust all of them.
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Developing for Android in Eclipse: R.java not regenerating
...r layout was not having the correct naming convention. It had some capital letters. So I renamed it to make all letters lowercase and the magic worked.
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Dynamic constant assignment
...
In Ruby, any variable whose name starts with a capital letter is a constant and you can only assign to it once. Choose one of these alternatives:
class MyClass
MYCONSTANT = "blah"
def mymethod
MYCONSTANT
end
end
class MyClass
def mymethod
my_constant = "blah"
...
What's the difference between and , and ?
...ple basically know that
it means to add more, let's say "ink", around the letters until they stand out
more amongst the rest of the letters.
That, unfortunately, means nothing to a blind person. On mobile phones
and other PDAs, text is already bold because screen resolution is very small. You can...