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Delete the first three rows of a dataframe in pandas
...
drop can even be calculated in-place (without extra assignment). Faster and simpler!
– tim
Jun 13 '14 at 18:24
1
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How do I update the notification text for a foreground service in Android?
...tivityNotification(""));
}
private Notification getMyActivityNotification(String text){
// The PendingIntent to launch our activity if the user selects
// this notification
CharSequence title = getText(R.string.title_activity);
PendingIntent contentIntent = PendingIntent.getActivity...
How to prevent custom views from losing state across screen orientation changes
...ndle = new Bundle();
// The vars you want to save - in this instance a string and a boolean
String someString = "something";
boolean someBoolean = true;
State state = new State(super.onSaveInstanceState(), someString, someBoolean);
bundle.putParcelable(State.STATE, state);
re...
LinkedBlockingQueue vs ConcurrentLinkedQueue
... we use bounded queue, in unbounded queue take() and put() merely consumes extra resource( interms of synchronization ) than ConcurrentLinkedQueue . although it is the case to use bounded queues for Producer-consumer scenarios
– amarnath harish
Aug 14 '18 at 9:...
Git: How to edit/reword a merge commit's message?
...t means that if you want to actually add a note to a merge, you have to do extra work. So people don't.
Note that, before Git 2.17 (Q2 2018), "git rebase -p" mangled log messages of a merge commit, which is now fixed.
See commit ed5144d (08 Feb 2018) by Gregory Herrero (``).
Suggested-by: Vegar...
How to implement a queue with three stacks?
... stacks, but using lazy evaluation which in practice corresponds to having extra internal data structures, so it does not constitute a solution
People near Sedgewick have confirmed they are not aware of a 3-stack solution within all the constraints of the original question
DETAILS
There are two i...
What is a method that can be used to increment letters?
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Simple, direct solution
function nextChar(c) {
return String.fromCharCode(c.charCodeAt(0) + 1);
}
nextChar('a');
As others have noted, the drawback is it may not handle cases like the letter 'z' as expected. But it depends on what you want out of it. The solution above will re...
Why are preprocessor macros evil and what are the alternatives?
...can't be debugged.
When you have a macro that translates to a number or a string, the source code will have the macro name, and many debuggers, you can't "see" what the macro translates to. So you don't actually know what is going on.
Replacement: Use enum or const T
For "function-like" macros,...
Generating a random & unique 8 character string using MySQL
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This problem consists of two very different sub-problems:
the string must be seemingly random
the string must be unique
While randomness is quite easily achieved, the uniqueness without a retry loop is not. This brings us to concentrate on the uniqueness first. Non-random uniqueness c...
When is assembly faster than C?
...Editor's note: more likely the FP latency bottleneck is enough to hide the extra cost of loop. Doing two Kahan summations in parallel for the odd/even elements, and adding those at the end, could maybe speed this up by a factor of 2.)
Whoops, I was running a slightly different version of the code ...