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What are the differences between Rust's `String` and `str`?
...of UTF-8 bytes of dynamic length somewhere in memory. Since the size is unknown, one can only handle it behind a pointer. This means that str most commonly2 appears as &str: a reference to some UTF-8 data, normally called a "string slice" or just a "slice". A slice is just a view onto some data,...
What's the difference between using CGFloat and float?
... to make your app 64-bit clean and try running it as such, since most Macs now have 64-bit CPUs and Snow Leopard is fully 64-bit, including the kernel and user applications. Apple's 64-bit Transition Guide for Cocoa is a useful resource.
...
Will Dart support the use of existing JavaScript libraries?
...
The answer is now Yes! Dart now ships a JS-interop library to use existing JavaScript code with your Dart app. Learn more here: https://www.dartlang.org/articles/js-dart-interop/
...
How can I load storyboard programmatically from class?
... storyboard programmatically. Project was started developing with xib, and now it's very hard to nest all xib files in storyboard. So I was looking a way to do it in code, like with alloc, init, push for viewControllers. In my case I have only one controller in storyboard: UITableViewController ,...
How to add an image to a JPanel?
...que property you will likely see visual artifacts." I'll update the answer now.
– Brendan Cashman
Jul 13 '12 at 12:45
...
How to duplicate virtualenv
...ext editor, you'll see something like:
Django==1.3
Fabric==1.0.1
etc...
Now, edit the line that says Django==x.x to say Django==1.3 (or whatever version you want to install in your new virtualenv).
Lastly, activate your new virtualenv, and run:
pip install -r requirements.txt
And pip will aut...
CHECK constraint in MySQL is not working
...
@Jérôme I know, I have some (more recent) answers that include improvements in this area (there had been other ways to workaround this issue, both in MariaDB and MySQL, before MariaDB properly implemented CHECK constraints). What I'm no...
jQuery loop over JSON result from AJAX Success?
...on(data) {
jQuery.each(data, function(index, item) {
//now you can access properties using dot notation
});
},
error: function(XMLHttpRequest, textStatus, errorThrown) {
alert("some error");
}
});
...
Insert all values of a table into another table in SQL
...to add a "where" condition, then Right Click on Grid -> Pane -> SQL
Now you can edit Query and add WHERE condition, then Right Click again -> Execute SQL, your required rows will be available to select on bottom)
Step 3
Follow Step 1 for the target table.
Step 4
Now go to ...
Convert blob to base64
...res => {
// do what you wanna do
console.log(res); // res is base64 now
});
I write this helper function for my problem on React Native project, I wanted to download an image and then store it as a cached image:
fetch(imageAddressAsStringValue)
.then(res => res.blob())
.then(blobT...