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How to tell if node.js is installed or not
..."open a terminal window" means do 1 of 2 things in Windows. Either use the Start button, go to Accessories, click Command Prompt; or in the Start button, go to All Programs, then the Node directory, then Node.js Command Prompt. Node has changed and a lot of blogs are way out of date, or just plain ...
How to remove non-alphanumeric characters?
... ]/i', '', $str);
The i stands for case insensitive.
^ means, does not start with.
\d matches any digit.
a-z matches all characters between a and z. Because of the i parameter you don't have to specify a-z and A-Z.
After \d there is a space, so spaces are allowed in this regex.
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Get Substring - everything before certain char
...
Things have moved on a bit since this thread started.
Now, you could use
string.Concat(s.TakeWhile((c) => c != '-'));
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Delete all rows in an HTML table
...
Points to note, on the Watch out for common mistakes:
If your start index is 0 (or some index from begin), then, the correct code is:
var tableHeaderRowCount = 1;
var table = document.getElementById('WRITE_YOUR_HTML_TABLE_NAME_HERE');
var rowCount = table.rows.length;
for (var i = tabl...
Is it correct to use JavaScript Array.sort() method for shuffling?
...orithm which effectively partitions the collection into "shuffled" (at the start of the collection, initially empty) and "unshuffled" (the rest of the collection). At each step of the algorithm, pick a random unshuffled element (which could be the first one) and swap it with the first unshuffled ele...
When to use ' (or quote) in Lisp?
...ring and returning a list of the resulting ... things. Let's make a false start:
(defun mess-with (number string)
'(value-of-number (1+ number) something-with-string (length string)))
Lisp> (mess-with 20 "foo")
(VALUE-OF-NUMBER (1+ NUMBER) SOMETHING-WITH-STRING (LENGTH STRING))
Hey! That's...
Can “using” with more than one resource cause a resource leak?
...WeylandYutani: This is a question-and-answer site. If you have a question, start a new question please!
– Eric Lippert
Jan 14 '14 at 20:31
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Visual Studio 2010 isn't building before a run when there are code changes
I've been using using F5 (Start Debugging) for years to build the code (if its out of date), and then debug. This was working on VS 2010 also, however today it just start debugging without a build. Say I do a clean on the project, and then hit F5 instead of building it so it can run it throws an err...
SQL Server SELECT LAST N Rows
...0'000 records is nothing where you should mind about performance. When you start talking about millions of records than you can start thinking about performance
– Dom84
Apr 6 '17 at 8:59
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Shell script - remove first and last quote (") from a variable
...with nothing too. In the same invocation (there isn't any need to pipe and start another sed. Using -e you can have multiple text processing).
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