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Compute a confidence interval from sample data
...assumptions for both are that the sample (array a) was drawn independently from a normal distribution with unknown standard deviation (see MathWorld or Wikipedia).
For large sample size n, the sample mean is normally distributed, and one can calculate its confidence interval using st.norm.interval(...
How to extract epoch from LocalDate and LocalDateTime?
How do I extract the epoch value to Long from instances of LocalDateTime or LocalDate ? I've tried
the following, but it gives me other results:
...
Iterating through a JSON object
...ortunately it's a little hard to explain all the ways you can extract data from lists and dictionaries and strings in the 600 characters you can put in a comment. I already said you should index the dict to get at the value associated with a key. I'm not sure what you want to iterate over. Learning ...
Property getters and setters
...roperties; such properties do not have storage in the instance - the value from the getter is meant to be computed from other instance properties. In your case, there is no x to be assigned.
Explicitly: "How can I do this without explicit backing ivars". You can't - you'll need something to backu...
Open another application from your own (intent)
...te an intent with action=MAIN and category=LAUNCHER
Get the PackageManager from the current context using context.getPackageManager
packageManager.queryIntentActivity(<intent>, 0) where intent has category=LAUNCHER, action=MAIN or packageManager.resolveActivity(<intent>, 0) to get the fi...
Why are function pointers and data pointers incompatible in C/C++?
...about pointers to functions in the last paragraph. They might be different from other pointers, and the committee is aware of that.
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Android Studio - How to increase Allocated Heap Size
...above, you can create/edit this file by accessing "Edit Custom VM Options" from the Help menu.
-------ORIGINAL ANSWER--------
Open file located at
/Applications/Android\ Studio.app/Contents/bin/studio.vmoptions
Change the content to
-Xms128m
-Xmx4096m
-XX:MaxPermSize=1024m
-XX:ReservedCodeCacheSize...
What is the difference between @PathParam and @QueryParam
... resource class field, or resource class bean property.
URI : users/query?from=100
@Path("/users")
public class UserService {
@GET
@Path("/query")
public Response getUsers(
@QueryParam("from") int from){
}}
To achieve the same using Spring, you can use
@PathVariable(Spring...
How to add hours to current time in python
...
from datetime import datetime, timedelta
nine_hours_from_now = datetime.now() + timedelta(hours=9)
#datetime.datetime(2012, 12, 3, 23, 24, 31, 774118)
And then use string formatting to get the relevant pieces:
>>>...
Please explain the exec() function and its family
...hich replaces the program in the current process with a brand new program.
From those two simple operations, the entire UNIX execution model can be constructed.
To add some more detail to the above:
The use of fork() and exec() exemplifies the spirit of UNIX in that it provides a very simple way to...