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Does Python optimize tail recursion?
...m + n # Update parameters instead of tail recursion
>>> trisum(1000,0)
500500
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How to deal with INSTALL_PARSE_FAILED_INCONSISTENT_CERTIFICATES without uninstall?
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answered Jul 6 '10 at 11:36
CommonsWareCommonsWare
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Python memory usage of numpy arrays
... numpy as np
>>> from sys import getsizeof
>>> a = [0] * 1024
>>> b = np.array(a)
>>> getsizeof(a)
8264
>>> b.nbytes
8192
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Understanding typedefs for function pointers in C
... can use it to declare variables and so on. For example:
static void alarm_catcher(int signum)
{
fprintf(stderr, "%s() called (%d)\n", __func__, signum);
}
static void signal_catcher(int signum)
{
fprintf(stderr, "%s() called (%d) - exiting\n", __func__, signum);
exit(1);
}
static str...
Rails I18n validation deprecation warning
...@application/gems/authlogic-3.1.0/lib/authlogic/acts_as_authentic/email.rb:102:in `block in included'",
"/Users/weppos/.rvm/gems/ruby-2.0.0-p247@application/gems/authlogic-3.1.0/lib/authlogic/acts_as_authentic/email.rb:99:in `class_eval'",
"/Users/weppos/.rvm/gems/ruby-2.0.0-p247@application/gems/...
How do I provide custom cast support for my class?
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answered Sep 10 '09 at 21:12
Charles BretanaCharles Bretana
127k2222 gold badges136136 silver badges206206 bronze badges
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How to detect user inactivity in Android
... public static final long DISCONNECT_TIMEOUT = 300000; // 5 min = 5 * 60 * 1000 ms
private static Handler disconnectHandler = new Handler(new Handler.Callback() {
@Override
public boolean handleMessage(Message msg) {
// todo
return true;
}
})...
C# “internal” access modifier when doing unit testing
...est assembly.
– EricSchaefer
Jul 9 '10 at 5:32
86
This should really be the accepted answer. I do...
How do I change the color of the text in a UIPickerView under iOS 7?
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edited Apr 18 '19 at 8:10
KlimczakM
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answered ...
Block Comments in a Shell Script
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Using vi (yes, vi) you can easily comment from line n to m
<ESC>
:10,100s/^/#/
(that reads, from line 10 to 100 substitute line start (^) with a # sign.)
and un comment with
<ESC>
:10,100s/^#//
(that reads, from line 10 to 100 substitute line start (^) followed by # with notin...