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Android - implementing startForeground for a service?
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From your main activity, start the service with the following code:
Intent i = new Intent(context, MyService.class);
context.startService(i);
Then in your service for onCreate() you would build your notification and set i...
How to sum array of numbers in Ruby?
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How can I use this way to sum a attribute from object. My array [product1, product2] I want to sum product1.price + product2.price. Is it possible using array.inject(:+)?
– Pablo Cantero
Apr 27 '11 at 20:45
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How do I typedef a function pointer with the C++11 using syntax?
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It has a similar syntax, except you remove the identifier from the pointer:
using FunctionPtr = void (*)();
Here is an Example
If you want to "take away the uglyness", try what Xeo suggested:
#include <type_traits>
using FunctionPtr = std::add_pointer<void()>::type...
Getting the first and last day of a month, using a given DateTime object
...t day and last day of the month where a given date lies in. The date comes from a value in a UI field.
15 Answers
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Is gcc's __attribute__((packed)) / #pragma pack unsafe?
...address as well as unaligned pointer
I've just built that version of gcc from source. For the above program, it produces these diagnostics:
c.c: In function ‘main’:
c.c:10:15: warning: taking address of packed member of ‘struct foo’ may result in an unaligned pointer value [-Waddress-of-...
Get a random boolean in python?
...s(1)"
1000000 loops, best of 3: 0.308 usec per loop
$ python -m timeit -s "from random import getrandbits" "not getrandbits(1)"
1000000 loops, best of 3: 0.262 usec per loop # not takes about 20us of this
Added this one after seeing @Pavel's answer
$ python -m timeit -s "from random import rando...
Command to get time in milliseconds
...ee first characters of nanoseconds to get the milliseconds:
date +%s%3N
From man date:
%N nanoseconds (000000000..999999999)
%s seconds since 1970-01-01 00:00:00 UTC
Source: Server Fault's How do I get the current Unix time in milliseconds in Bash?.
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How do I auto-reload a Chrome extension I'm developing?
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I am guessing we should call chrome.runtime.reload() from the background script
– Alexander Mills
Jan 1 '18 at 23:49
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Adding a directory to $LOAD_PATH (Ruby)
... I obviously thought that $LOAD_PATH was better. But once you've graduated from beginner status, I'd only use $LOAD_PATH if I was trying to make my code more readable to a beginner. Meh its a trade off. It depends on how "public" the code is, so long as the memory usage is the same for each, which I...
How to switch activity without animation in Android?
...ks just great especially for transparent/dialog themed activities excluded from recents with a different task affinity. Without this the animation kept showing creating very odd results for a dialog being opened!
– 3c71
Oct 5 '13 at 8:54
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