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How can I SELECT rows with MAX(Column value), DISTINCT by another column in SQL?
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18 Answers
18
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JSON.parse unexpected character error
...e not parsing a string, you're parsing an already-parsed object :)
var obj1 = JSON.parse('{"creditBalance":0,...,"starStatus":false}');
// ^ ^
// if you want to parse, the input should be a string
var obj2 = {"creditBa...
How can the Euclidean distance be calculated with NumPy?
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931
Use numpy.linalg.norm:
dist = numpy.linalg.norm(a-b)
You can find the theory behind this in I...
Hidden features of Windows batch files
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91 Answers
91
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How to click first link in list of items after upgrading to Capybara 2.0?
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177
You can just use:
first('.item').click_link('Agree')
or
first('.item > a').click
(if ...
Creating a UIImage from a UIColor to use as a background image for UIButton [duplicate]
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145
I created a category around UIButton to be able to set the background color of the button and ...
How to find out which JavaScript events fired?
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147
Just thought I'd add that you can do this in Chrome as well:
Ctrl + Shift + I (Developer Tool...
Min/Max-value validators in asp.net mvc
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answered Aug 31 '11 at 12:22
Charles OuelletCharles Ouellet
5,60333 gold badges3636 silver badges5353 bronze badges
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Assert an object is a specific type
... object in my test that I want to check the type of. Is it a type of Object1 or a type of Object2?
4 Answers
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How can I check if a URL exists via PHP?
...ders = @get_headers($file);
if(!$file_headers || $file_headers[0] == 'HTTP/1.1 404 Not Found') {
$exists = false;
}
else {
$exists = true;
}
From here and right below the above post, there's a curl solution:
function url_exists($url) {
return curl_init($url) !== false;
}
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