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Elegant ways to support equivalence (“equality”) in Python classes
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Consider this simple problem:
class Number:
def __init__(self, number):
self.number = number
n1 = Number(1)
n2 = Number(1)
n1 == n2 # False -- oops
So, Python by default uses the object identifiers for comparis...
What is the shortcut to Auto import all in Android Studio?
...re any way of auto importing (like in Eclipse Shift + Ctrl + O ) in Android Studio ?
11 Answers
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Convert JSON String to Pretty Print JSON output using Jackson
...apper.writerWithDefaultPrettyPrinter().writeValueAsString(json);
this avoids your having to define actual POJO to map data to.
Or you can use JsonNode (JSON Tree) as well.
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How to access maven.build.timestamp for resource filtering
...it to something newer, fixed it for me, 3.x ex:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<version>3.1.0</version>
</plugin>
<properties><timestamp>... workaround is no lon...
Appending to an object
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This answer expects you to know the id of the alert to be added. Well, if you already know that, then you can simply follow the original object format and do: alerts[3] = { app: 'hello3', message: 'message 3' }. With this you can access a message by id: alerts[...
How can I load storyboard programmatically from class?
...ur storyboard go to the Attributes inspector and set the view controller's Identifier. You can then present that view controller using the following code.
UIStoryboard *sb = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
UIViewController *vc = [sb instantiateViewControllerWithIdent...
NSInvocation for Dummies?
...ting an NSInvocation object to say: "Hey, if you want to undo what I just did, send this message to that object, with these arguments". You give the NSInvocation object to the NSUndoManager, and it adds that object to an array of undoable actions. If the user calls "Undo", NSUndoManager simply looks...
Reading HTML content from a UIWebView
...g loaded twice, which may have a performance impact. Is there a way to avoid that?
– Fuzzy Purple Monkey
Jun 14 '09 at 9:56
2
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Set cursor position on contentEditable
...e with the standards-based browsers, but will probably fail in IE. I'm providing it as a starting point. IE doesn't support DOM Range.
var editable = document.getElementById('editable'),
selection, range;
// Populates selection and range variables
var captureSelection = function(e) {
// Do...
MySQL vs MongoDB 1000 reads
...sts in MySQL with about 20 million records indexed only on a field called 'id'.
7 Answers
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