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Rank function in MySQL
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+1 for the devious inline initialization, that's a beautiful trick.
– Charles
Jul 26 '10 at 9:42
29
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How to calculate moving average without keeping the count and data-total?
... Beware that this is quite far from the common definition of average. If you set N = 5 and enter 5 5 samples, the average will be 0.67.
– Dan Dascalescu
Jan 9 '18 at 8:28
2
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How do I concatenate or merge arrays in Swift?
If there are two arrays created in swift like this:
12 Answers
12
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How do I create a Linked List Data Structure in Java? [closed]
...or
public LinkList() {
first = null;
}
//Returns true if list is empty
public boolean isEmpty() {
return first == null;
}
//Inserts a new Link at the first of the list
public void insert(int d1, double d2) {
Link link = new Link(d1, d2);
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Hex transparency in colors [duplicate]
... color transparency I searched around a bit although I couldn't find a specific answer to my question.
10 Answers
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How to escape single quotes within single quoted strings
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If you really want to use single quotes in the outermost layer, remember that you can glue both kinds of quotation. Example:
alias rxvt='urxvt -fg '"'"'#111111'"'"' -bg '"'"'#111111'"'"
# ^^^^^ ^^...
Is there a way to pass the DB user password into the command line tool mysqladmin?
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quotes are allowed too if password contains spaces, as in: -p'YOURPASSWORD HERE'
– Vigintas Labakojis
Jul 16 '15 at 10:10
42
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do {…} while(false)
...ode, but doing something like this is just an idiotically disguised goto. If you think a goto is the right tool for the job, then you should just use a #$(*#@ goto.
– dsimcha
Feb 22 '10 at 20:55
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INSERT statement conflicted with the FOREIGN KEY constraint - SQL Server
...olumn that is not also in the primary key column of the referenced table.
If you have SQL Server Management Studio, open it up and sp_help 'dbo.Sup_Item_Cat'. See which column that FK is on, and which column of which table it references. You're inserting some bad data.
Let me know if you need anyt...
\d is less efficient than [0-9]
...or \d . I said it was probably more efficient to use a range or digit specifier than a character set.
5 Answers
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