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Generating random strings with T-SQL
...se of an off-by-one error: SUBSTRING(..., 0, ...) returns empty string for index 0, and for 529126 this 'hides' the first character generated. Fix is to compute @dice = rand(@seed) * len(@specials)+1 to make the indexes 1 based.
– Remus Rusanu
Feb 17 '16 at 13:...
Different dependencies for different build profiles
...
To quote the Maven documentation on this:
A profile element contains both an optional activation (a profile trigger) and the set of changes to be made to the POM if that profile has been activated. For example, a project built ...
How to find list intersection?
...is solution is if you need to retain duplicates. If you can be sure of uniqueness, then an O(n) set solution would be better. However, if duplicates are not possible, why is the OP even talking about lists to begin with? The notion of list intersection is a mathematical absurdity
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Split a List into smaller lists of N size
... to nSize? For example if nSize is 3 and my array is size 5 then the first index range returned is GetRange(3, 3)
– Matthew Pigram
Mar 22 '18 at 1:11
2
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Center a 'div' in the middle of the screen, even when the page is scrolled up or down?
...r {
height: 60%;
left: 50%;
position: absolute;
top: 50%;
z-index: 10;
width: 60%;
}
#message .container .text {
background: #fff;
height: 100%;
left: -50%;
position: absolute;
top: -50%;
width: 100%;
}
#message .bg {
background: rgba(0, 0, 0, 0.5);
...
Why do we have to normalize the input for an artificial neural network?
It is a principal question, regarding the theory of neural networks:
9 Answers
9
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Best practices for SQL varchar column length [closed]
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@Ariel: There are issues and limitations on indexes to consider, too. You can't have a (a,b,c,d) index when all four columns are VARCHAR(255).
– ypercubeᵀᴹ
Nov 28 '11 at 23:30
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Best way to select random rows PostgreSQL
... few) gaps.
Obviously no or few write operations.
Your ID column has to be indexed! A primary key serves nicely.
The query below does not need a sequential scan of the big table, only an index scan.
First, get estimates for the main query:
SELECT count(*) AS ct -- optional
, mi...
Pretty git branch graphs
...lly pretty looking graphs of git branches and commits. How can I make high-quality printable images of git history?
33 Answ...
Iterating C++ vector from the end to the beginning
.../ Process `*iterator`
}
This pattern is useful, for example, for reverse-indexing an array using an unsigned index
int array[N];
...
// Iterate over [0, N) range in reverse
for (unsigned i = N; i-- != 0; ) {
array[i]; // <- process it
}
(People unfamiliar with this pattern often insist on ...