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Apache Spark: The number of cores vs. the number of executors
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I haven't played with these settings myself so this is just speculation but if we think about this issue as normal cores and threads in a distributed system then in your cluster you can use up to 12 cores (4 * 3 machines) and 24 threads (8 * 3 machines). In you...
C#: Raising an inherited event
...ate protected methods which can be used to raise the events:
public class MyClass
{
public event EventHandler Loading;
public event EventHandler Finished;
protected virtual void OnLoading(EventArgs e)
{
EventHandler handler = Loading;
if( handler != null )
{
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Difference between two dates in Python
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My code uses datetime.strptime to convert strings to datetime objects. Since the OP stated that "The format of the date is YYYY-MM-DD", I assumed the dates were represented as strings. If they're not, there's obviously no nee...
Android SharedPreference security
... read data inside it as it is encrypted. So its secure.For Utmost security my suggestion will be to generate the key used for encryption at run time rather than hard coding it. There are many ways to do that :)
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How to use the pass statement?
... new class with some methods that you don't want to implement, yet.
class MyClass(object):
def meth_a(self):
pass
def meth_b(self):
print "I'm meth_b"
If you were to leave out the pass, the code wouldn't run.
You would then get an:
IndentationError: expected an indented...
Why are trailing commas allowed in a list?
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('a'), is a string; but my point was that trailing commas in tuples are significant, but in lists they don't appear to be yet Python accepts them.
– Burhan Khalid
Jul 22 '12 at 5:58
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Is there a JavaScript strcmp()?
... > str2)
This is an order of magnitude faster than localeCompare() on my machine.
The + ensures that the answer is always numeric rather than boolean.
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How to save a git commit message from windows cmd?
...me.
I am using Git Bash in windows. And couldn't get past this either. My commit messages are simple so I dont want to add another editor atm.
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Responsive iframe using Bootstrap
...embed/2EIeUlvHAiM" frameborder="0" allowfullscreen></iframe>
In my case, i just changed it to width="100%" and left the rest as is. It's not the most elegant solution (after all, in different devices you'll get weird ratios) But the video itself does not get deformed, just the frame.
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“unadd” a file to svn before commit
...nges in the working copy, by restoring the lastest HEAD version. I removed my downvote, but I still feel the warning is important.
– jpaugh
May 25 '16 at 17:56
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