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Why is using onClick() in HTML a bad practice?
...sadvantage is discoverability: looking at the HTML does not tell you which callbacks are attached to it, not even whther there are any.
– Michael Borgwardt
Nov 28 '12 at 8:17
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how to exclude null values in array_agg like in string_agg using postgres?
...UNC = fn_array_agg_notnull,
STYPE = ANYARRAY,
INITCOND = '{}'
);
Calling the second is (naturally) a little nicer looking than the first:
select array_agg_notnull(v) from x;
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Adding elements to object
...h function inside a object.
let obj={push:function push(element){ [].push.call(this,element)}};
Now you can push elements like an array
obj.push(1)
obj.push({a:1})
obj.push([1,2,3])
This will produce this object
obj={
0: 1
1: {a: 1}
2: (3) [1, 2, 3]
length: 3
}
Notice the elements are a...
Scheduling recurring task in Android
...sleep as soon as your onReceive() method completes. If your alarm receiver called Context.startService(), it is possible that the phone will sleep before the requested service is launched. To prevent this, your BroadcastReceiver and Service will need to implement a separate wake lock policy to ensur...
get the latest fragment in backstack
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What's the point of calling it a stack if I can't access the fragment via a pop method?
– Kenny Worden
Mar 20 '15 at 19:45
5
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Get exit code of a background process
I have a command CMD called from my main bourne shell script that takes forever.
12 Answers
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How do I use ROW_NUMBER()?
...bases, despite their name, don't have a formal ordering, so if you want to call a row "1" or "10" or "1337", you need to order them first using an ORDER BY clause, which is the one that goes in the OVER (ORDER BY X) clause.
– Wtrmute
Sep 13 '17 at 0:25
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Programmatically fire button click event?
Is there a way to programmatically fire a button click event? I have a button placed there in an UIView, and in a particular scenario i want to click the button via code, not manually as a user. Is it possible in iOS development? Please provide your suggestions and guide me how to do that.
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What does SynchronizationContext do?
...it. The running thread can be associated with a synchronization context by calling the static SynchronizationContext.SetSynchronizationContext method, and the current context of the running thread can be queried via the SynchronizationContext.Current property.
Despite what I just wrote (each thread ...
How to stop event bubbling on checkbox click
...Use the method
isDefaultPrevented to know whether
this method was ever called (on that
event object).
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