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PendingIntent does not send Intent extras
...ent) event handler, that way you can access the new intent that was called for the activity (which is not the same as just calling getIntent(), this will always return the first Intent that launched your activity.
@Override
protected void onNewIntent(Intent intent) {
int startPageNumber;
i...
How to check if AlarmManager already has an alarm set?
... this still correct? I need to do this check in order to advise the user before any action is taken to create a new alarm.
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How safe is it to store sessions with Redis?
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Redis is perfect for storing sessions. All operations are performed in memory, and so reads and writes will be fast.
The second aspect is persistence of session state. Redis gives you a lot of flexibility in how you want to persist session ...
Gradient of n colors ranging from color 1 and color 2
I often work with ggplot2 that makes gradients nice ( click here for an example ). I have a need to work in base and I think scales can be used there to create color gradients as well but I'm severely off the mark on how. The basic goal is generate a palette of n colors that ranges from x colo...
What is the volatile keyword useful for?
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volatile has semantics for memory visibility. Basically, the value of a volatile field becomes visible to all readers (other threads in particular) after a write operation completes on it. Without volatile, readers could see some non-updated value....
Why should I implement ICloneable in c#?
...here's no clear indication from the interface whether your Clone method performs a "deep" or "shallow" clone.
See this blog post from Brad Abrams back in 2003(!) for more information.
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How do I remove leading whitespace in Python?
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@balpha: Thanks for point that out! I've added that to the answer.
– coobird
Jun 6 '09 at 8:08
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postgresql - replace all instances of a string within text field
...postgresql's replace function:
replace(string text, from text, to text)
for instance :
UPDATE <table> SET <field> = replace(<field>, 'cat', 'dog')
Be aware, though, that this will be a string-to-string replacement, so 'category' will become 'dogegory'. the regexp_replace func...
SQL Server equivalent to MySQL enum data type?
... Why not use a table that defines valid values, and then use a foreign key constraint instead?
– Elaskanator
Dec 5 '18 at 17:04
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relative path in require_once doesn't work
...vent cases where you can run a PHP script from a different folder and therefore the relatives paths will not work.
Edit: slash problem fixed
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