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Ruby: Can I write multi-line string with no concatenation?
...
In ruby 2.0 you can now just use %
For example:
SQL = %{
SELECT user, name
FROM users
WHERE users.id = #{var}
LIMIT #{var2}
}
share
...
How many and which are the uses of “const” in C++?
...ect remain the same. Once one of the object changes data, you however need now two versions: One for the original, and one for the copy. That is, you copy on a write to either object, so that they now both have their own version.
Using code:
int main() {
string const a = "1234";
string co...
How to keep keys/values in same order as declared?
...elevates this implementation detail to a language specification, so it is now mandatory that dict preserves order in all Python implementations compatible with that version or newer. See the pronouncement by the BDFL. As of Python 3.8, dictionaries also support iteration in reverse.
You may still w...
Center a popup window on screen?
...lso work on windows that aren't maxed out to the screen's width and height now thanks to @Frost!
If you're on dual monitor, the window will center horizontally, but not vertically... use this function to account for that.
const popupCenter = ({url, title, w, h}) => {
// Fixes dual-screen po...
What are C++ functors and their uses?
...
int operator()(int y) const { return x + y; }
private:
int x;
};
// Now you can use it like this:
add_x add42(42); // create an instance of the functor class
int i = add42(8); // and "call" it
assert(i == 50); // and it added 42 to its argument
std::vector<int> in; // assume this conta...
Google Chrome redirecting localhost to https
... very bottom of a page is QUERY domain textbox - verify that localhost is known to the browser. If it says "Not found" then this is not the answer you are looking for.
If it is, DELETE the localhost domain using the textbox above
Your site should now work using plain old HTTP
This is not a permane...
How to find the size of localStorage
...n("\n"));
P.S. Snippets are updated according to request in the comment. Now the calculation includes the length of the key itself.
Each length is multiplied by 2 because the char in javascript stores as UTF-16 (occupies 2 bytes)
P.P.S. Should work both in Chrome and Firefox.
...
How to use Git for Unity3D source control?
...for Git called Git LFS that directly deals with the below problem. You can now easily and efficiently version large binary files!
Git can work fine with 3D games out of the box. However the main caveat here is that versioning large (>5 MB) media files can be a problem over the long term as your...
Is UML practical? [closed]
...carefully about what they're doing, but a professional programmer already knows what they're doing. Most of the time, writing the code itself is quicker and more effective than writing about the code, because their programming intuition is tuned to the task.
It's not just about what you're doing t...
How to determine SSL cert expiration date from a PEM encoded certificate?
...
If you just want to know whether the certificate has expired (or will do so within the next N seconds), the -checkend <seconds> option to openssl x509 will tell you:
if openssl x509 -checkend 86400 -noout -in file.pem
then
echo "Certific...