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Javascript call() & apply() vs bind()?
...fined will be replaced with the global object and primitive values will be converted to objects. So if you don't use this in the function it doesn't matter.
– Amit Shah
May 18 '18 at 18:46
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MySQL - length() vs char_length()
... in two bytes. Or UTF-8, where the number of bytes varies. For example:
select length(_utf8 '€'), char_length(_utf8 '€')
--> 3, 1
As you can see the Euro sign occupies 3 bytes (it's encoded as 0xE282AC in UTF-8) even though it's only one character.
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How do you get the logical xor of two variables in Python?
... the ^ operator):
from operator import xor
xor(bool(a), bool(b)) # Note: converting to bools is essential
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Generate Java classes from .XSD files…?
...thing big and complicated like JAXB. Unfortunately, I don't see any way to convert my existing .XSD to .class files, which is really what I need to start. Is there a way to do this?
– Keith Palmer Jr.
Mar 27 '09 at 13:10
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HQL ERROR: Path expected for join
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select u from UserGroup ug inner join ug.user u
where ug.group_id = :groupId
order by u.lastname
As a named query:
@NamedQuery(
name = "User.findByGroupId",
query =
"SELECT u FROM UserGroup ug " +
"INNER JOIN...
How to estimate how much memory a Pandas' DataFrame will need?
...718016/1024/1024 = 392.6, so df.info(memory_usage="deep") may use 2^10 to convert byte to MB, which makes me confused. Thanks for your help anyway :D.
– Catbuilts
Oct 30 '18 at 4:01
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R memory management / cannot allocate vector of size n Mb
...a whole.
To use Readyboost, right click on the drive, go to properties and select 'ReadyBoost' and select 'use this device' radio button and click apply or ok to configure.
iOS 7's blurred overlay effect using CSS?
...kePopup' runs html2canvas for rendering document as an image.
The image is converted to data-url string and it is painted as the popup's background-image.
Popup's bg is blurred by -webkit-filter:blur
Append the popup into document.
While you're dragging the popup, it changes its own background-posit...
What is a JavaBean exactly?
...s to (and implies that it is capable of) "serialization" -- a process that converts an instance into a stream of bytes. Those bytes can be stored in files, sent over a network connection, etc, and have enough info to allow a JVM (at least, one that knows about the object's type) to reconstruct the ...
What is pseudopolynomial time? How does it differ from polynomial time?
...mon intuition for polynomial time is "time O(nk) for some k." For example, selection sort runs in time O(n2), which is polynomial time, while brute-force solving TSP takes time O(n · n!), which isn't polynomial time.
These runtimes all refer to some variable n that tracks the size of the input. Fo...