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Should the hash code of null always be zero, in .NET
... example, the hash code of an int is just the int, so it uses the full int range. What value in that range do you choose for null? Whatever one you pick will collide with the value's hash code itself.
Collisions in and of themselves are not necessarily a problem, but you need to know they are there...
Javascript equivalent of Python's zip function
... make this handle any iterable (e.g. in Python you can use zip on strings, ranges, map objects, etc.), you could define the following:
function iterView(iterable) {
// returns an array equivalent to the iterable
}
However if you write zip in the following way, even that won't be necessary:
f...
What is the difference between BIT and TINYINT in MySQL?
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TINYINT[(M)] [UNSIGNED] [ZEROFILL]
A very small integer. The signed range
is -128 to 127. The unsigned range is
0 to 255.
Additionally consider this;
BOOL, BOOLEAN
These types are synonyms for
TINYINT(1). A value of zero is
considered false. Non-zero values are
considered tru...
Create list of single item repeated N times
...ts . To create unique empty sub-lists, use for-comprehension: [[] for i in range(0,n)]
– Josiah Yoder
Aug 15 '17 at 17:01
...
What is Dispatcher Servlet in Spring?
... in the browser. This information is referred to as the model. But sending raw information back to the user isn’t suffi- cient—it needs to be formatted in a user-friendly format, typically HTML. For that, the information needs to be given to a view, typically a JavaServer Page (JSP).
One of the ...
Why does Python code use len() function instead of a length method?
...ike x*(a+b) into xa + xb to the clumsiness of doing the same thing using a raw OO notation.
(b) When I read code that says len(x) I know that it is asking for the length of something. This tells me two things: the result is an integer, and the argument is some kind of container. To the contrary, whe...
MySql: Tinyint (2) vs tinyint(1) - what is the difference?
...isplay width.
It's important to note that it does not affect the accepted range of values for that particular type, i.e. TINYINT(1) still accepts [-128 .. 127].
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Can I use assert on Android devices?
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See the Embedded VM Control document (raw HTML from the source tree, or a nicely formatted copy).
Basically, the Dalvik VM is set to ignore assertion checks by default, even though the .dex byte code includes the code to perform the check. Checking assertions i...
How to get a complete list of ticker symbols from Yahoo Finance? [closed]
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Nice one. The raw YQL: select * from yahoo.finance.industry where id in (select industry.id from yahoo.finance.sectors)
– David Gilbertson
Apr 2 '14 at 4:49
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Which is the preferred way to concatenate a string in Python?
...f you want to comment on part of a string (as above) or if you want to use raw strings or triple quotes for part of a literal but not all.
Since this happens at the syntax layer it uses zero concatenation operators.
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