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How do I find the .NET version?
... if you have Visual Studio installed, or else if you have the .NET framework SDK, then the SDK Command prompt.
4. wmic product get description | findstr /C:".NET Framework"
5. dir /b /ad /o-n %systemroot%\Microsoft.NET\Framework\v?.*
The last command (5) will list out all the versions (except 4.5...
How does BLAS get such extreme performance?
Out of curiosity I decided to benchmark my own matrix multiplication function versus the BLAS implementation... I was to say the least surprised at the result:
...
Take a screenshot of a webpage with JavaScript?
Is it possible to to take a screenshot of a webpage with JavaScript and then submit that back to the server?
15 Answers
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Is there a way to 'uniq' by column?
I have a .csv file like this:
8 Answers
8
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Format bytes to kilobytes, megabytes, gigabytes
...ed in a database as bytes. What's the best way to format this size info to kilobytes, megabytes and gigabytes? For instance I have an MP3 that Ubuntu displays as "5.2 MB (5445632 bytes)". How would I display this on a web page as "5.2 MB" AND have files less than one megabyte display as KB and files...
How do I count a JavaScript object's attributes? [duplicate]
...s you defined from those you got "for free."
Here's one way:
var foo = {"key1": "value1", "key2": "value2", "key3": "value3"};
Object.prototype.foobie = 'bletch'; // add property to foo that won't be counted
var count = 0;
for (var k in foo) {
if (foo.hasOwnProperty(k)) {
++count;
...
How to find gaps in sequential numbering in mysql?
...performance.
The (not as fast as possible) answer
Here's version that works on table of any size (not just on 100 rows):
SELECT (t1.id + 1) as gap_starts_at,
(SELECT MIN(t3.id) -1 FROM arrc_vouchers t3 WHERE t3.id > t1.id) as gap_ends_at
FROM arrc_vouchers t1
WHERE NOT EXISTS (SELECT t...
How can I create a two dimensional array in JavaScript?
...2
Adam
12k99 gold badges8080 silver badges137137 bronze badges
answered Jun 8 '09 at 18:27
Ballsacian1Ballsaci...
Unique (non-repeating) random numbers in O(1)?
I'd like to generate unique random numbers between 0 and 1000 that never repeat (i.e. 6 doesn't show up twice), but that doesn't resort to something like an O(N) search of previous values to do it. Is this possible?
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What is a regular expression for a MAC Address?
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Moshe
54.9k7171 gold badges259259 silver badges414414 bronze badges
answered Nov 23 '10 at 20:22
netcodernetcod...