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ActiveRecord: size vs count
... can find the number of records using both Model.size and Model.count . If you're dealing with more complex queries is there any advantage to using one method over the other? How are they different?
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How can I delay a method call for 1 second?
...
You could also use a block
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 1 * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
[object method];
});
Most of time you will want to use dispatch_get_main_queue, although if there is no UI in the method you could use a global queue.
Edit:
Swift...
How to convert TimeStamp to Date in Java?
... I hate when ppl use libraries in their answers and expect everyone to know how to import them :/
– Sodj
Nov 28 '18 at 10:04
...
Programmatically add custom event in the iPhone Calendar
...te the event handling inside of a block.
2) You need to commit your event now or pass the "commit" param to your save/remove call
Everything else stays the same...
Add the EventKit framework and #import <EventKit/EventKit.h> to your code.
In my example, I have a NSString *savedEventId inst...
What is the purpose of Looper and how to use it?
I am new to Android. I want to know what the Looper class does and also how to use it. I have read the Android Looper class documentation but I am unable to completely understand it.
I have seen it in a lot of places but unable to understand its purpose. Can anyone help me by defining the purpos...
What programming practice that you once liked have you since changed your mind about? [closed]
...tial to confuse/complicate
//things but can make the code hard to follow. Now I spend more time on
//improving the simplicity and readability of the code and inserting fewer yet
//relevant comments, instead of spending that time writing overly-descriptive
//commentaries all throughout the code.
...
Android App Not Install. An existing package by the same name with a conflicting signature is alread
...om another SDK, the keys will definitely be different.
Also if you don't know exactly what key was used before to sign the apk and yet you want to install the new version of your app, you can just uninstall the previous application and reinstall the new one.
Hope this Helps...
Regards!
...
How does one make random number between range for arc4random_uniform()?
so my goal in this codebit is to randomly roll two dice and as we all know your regular die only has 6 sides so I imported Foundation for access to arc4random_uniform(UInt32). I attempted using the range of (1..7) to avoid randomly getting 0 however that returned an error which I didn't enjoy too mu...
Prevent errors from breaking / crashing gulp watch
...ror function should look like this:
function swallowError (error) {
// If you want details of the error in the console
console.log(error.toString())
this.emit('end')
}
I think you have to bind this function on the error event of the task that was falling, not the watch task, because that'...
How do I verify that an Android apk is signed with a release certificate?
...ommand, (go to java < jdk < bin path in cmd prompt)
$ jarsigner -verify -verbose -certs my_application.apk
If you see "CN=Android Debug", this means the .apk was signed with the debug key generated by the Android SDK
(means it is unsigned), otherwise you will find something for CN.
For more...