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Swift: Testing optionals for nil
...ing with possXYZ (the unwrapped value of xyz)
} else {
// do something now that we know xyz is .None
}
This way you can both test if xyz contains a value and if so, immediately work with that value.
With regards to your compiler error, the type UInt8 is not optional (note no '?') and therefor...
What is the MySQL JDBC driver connection string?
...class.forName string is "com.mysql.jdbc.Driver", which you can find (edit: now on the same page).
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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...
How to parse JSON to receive a Date object in JavaScript?
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There is now a standard JSON date format. tools.ietf.org/html/rfc7493#section-4.3
– Bryan Larsen
Feb 6 '17 at 14:18
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MongoDB: update every document on one field
...n, for your example, the <update> is:
{ $set: { lastLookedAt: Date.now() / 1000 } }
However, depending on your version of MongoDB, the query will look different. Regardless of version, the key is that the empty condition {} will match any document. In the Mongo shell, or with any MongoDB ...
Where to find Application Loader app in Mac?
...ansporter
In October 2019, Apple announced the Transporter app for macOS, now available in the Mac App Store.
With Transporter you can:
Upload your .ipa or .pkg files to App Store Connect.
View delivery progress, including validation warnings, errors, and delivery logs, so you can qui...
Git: How to remove file from historical commit?
...0Mb). In another commit i add the same file but in the right size (small). Now my repo when i clone is too heavy :( How to remove that large file from repo history to reduce the size of my repo ?
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JavaScript global event mechanism
...ough...
Update: it doesn't work in Opera, but I'm hacking Dragonfly right now to see what it gets. Suggestion about hacking Dragonfly came from this question:
Mimic Window. onerror in Opera using javascript
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How to install MySQLdb (Python data access library to MySQL) on Mac OS X?
...iven that this site is intended to address these sorts of problems, and I know that I'm going to need a reference to the solution in future, I'm going to ask the question, provide my answer and see what else floats to the surface.
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How to turn a String into a JavaScript function call? [duplicate]
...ndow.settings.functionName does. window[window.settings.functionName] does now. In javascript, object members can be access with a string the same way you do with an array. Assuming your function is declared in the global scope, it become a function in the window object. You can call it using a stri...