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How do you count the number of occurrences of a certain substring in a SQL varchar?
...e comma with an empty string and comparing the lengths
Declare @string varchar(1000)
Set @string = 'a,b,c,d'
select len(@string) - len(replace(@string, ',', ''))
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How can I use map and receive an index as well in Scala?
... as follows:
import TraversableUtil._
List('a','b','c').map(doIndexed((i, char) => char + i))
which results in the list
List(97, 99, 101)
This way, you can use the usual Traversable-functions at the expense of wrapping your effective function. The overhead is the creation of the memoizing o...
Do the JSON keys have to be surrounded by quotes?
...ins and ends with
quotation marks. [...]
string = quotation-mark *char quotation-mark
quotation-mark = %x22 ; "
Read the whole RFC here.
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How can I find non-ASCII characters in MySQL?
...se that has some data imported from Excel . The data contains non- ASCII characters (em dashes, etc.) as well as hidden carriage returns or line feeds. Is there a way to find these records using MySQL?
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Is it better to use std::memcpy() or std::copy() in terms to performance?
...in as large of chunks as possible (many other implementations operate with char / char *, whereas I operate with T / T * (where T is the largest type in the user's implementation that has correct overflow behavior), so fast memory access on the largest types I can is central to the performance of my...
How to replace strings containing slashes with sed?
... search/replace lines, e.g.:
s:?page=one&:pageone:g
You can use any character as a delimiter that's not part of either string. Or, you could escape it with a backslash:
s/\//foo/
Which would replace / with foo. You'd want to use the escaped backslash in cases where you don't know what char...
How to use icons and symbols from “Font Awesome” on Native Android Application
...llowing:
Copied fontawesome-webfont.ttf into my assests folder
Found the character entities for icons I wanted, using this page: http://fortawesome.github.io/Font-Awesome/cheatsheet/
Created an entry in strings.xml for each icon. Eg for a heart:
<string name="icon_heart">&#xf004;</s...
What is the difference between sigaction and signal?
...s defined in the C standard. Nevertheless, it has a number of undesirable characteristics that sigaction() avoids - unless you use the flags explicitly added to sigaction() to allow it to faithfully simulate the old signal() behaviour.
The signal() function does not (necessarily) block other signa...
TINYTEXT, TEXT, MEDIUMTEXT, and LONGTEXT maximum storage sizes
...ONGTEXT | 4,294,967,295 (232−1) bytes = 4 GiB
Note that the number of characters that can be stored in your column will depend on the character encoding.
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In C# check that filename is *possibly* valid (not that it exists) [duplicate]
... You can add a check for your filename containing any of the characters in the array returned by char[] badChars = Path.GetInvalidFileNameChars();
– Jon Dosmann
Feb 12 '15 at 18:27
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