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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...
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 ...
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,...
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/
...
Adjusting and image Size to fit a div (bootstrap)
...
it's img-fluid now, not img-responsive
– wordsforthewise
Aug 18 '17 at 4:23
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How to check if a file exists in the Documents directory in Swift?
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Nowadays (2016) Apple recommends more and more to use the URL related API of NSURL, NSFileManager etc.
To get the documents directory in iOS and Swift 2 use
let documentDirectoryURL = try! NSFileManager.defaultManager().URL...
iOS: UIButton resize according to text length
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In Xcode 4.5 and above, this can now be done by using 'Auto-layouting / Constraints'.
Major advantages are that:
You don't need to programmatically set frames at all!
If done right, you don't need to bother about resetting frames for orientation changes....
JPA OneToMany not deleting child
...e JPA doesn't cater for it.
In part this is because JPA doesn't actually know if it should delete something removed from the collection. In object modeling terms, this is the difference between composition and "aggregation*.
In composition, the child entity has no existence without the parent. A c...
Using Version Control for Home Development?
Up till now I have been developing my personal and school
projects at home without using any form of revision control
software to handle my changes and whatnot.
...