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Why use the yield keyword, when I could just use an ordinary IEnumerable?
...g yield makes the collection lazy.
Let's say you just need the first five items. Your way, I have to loop through the entire list to get the first five items. With yield, I only loop through the first five items.
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Checking for a null int value from a Java ResultSet
...or a null value, from a ResultSet, where the column is being cast to a primitive int type.
10 Answers
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how to programmatically fake a touch event to a UIButton?
I'm writing some unit tests and, because of the nature of this particular app, it's important that I get as high up the UI chain as possible. So, what I'd like to do is programmatically trigger a button-press, as if the user had pressed the button in the GUI .
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Rails: Using greater than/less than with a where statement
I'm trying to find all Users with an id greater than 200, but I'm having some trouble with the specific syntax.
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SSL Error When installing rubygems, Unable to pull data from 'https://rubygems.org/
... -e 'puts OpenSSL::X509::DEFAULT_CERT_FILE')
Generate certificate:
security find-certificate -a -p /Library/Keychains/System.keychain > "$cert_file"
security find-certificate -a -p /System/Library/Keychains/SystemRootCertificates.keychain >> "$cert_file"
The whole code: https://github....
Detect Windows version in .net
... you need for distinguishing most Windows OS major releases, but not all. It consists of three components which map to the following Windows versions:
+------------------------------------------------------------------------------+
| | PlatformID | Major version | Min...
Vertically align an image inside a div with responsive height
... following code which sets up a container which has a height that changes with the width when the browser is re-sized (to maintain a square aspect ratio).
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Check if user is using IE
I am calling a function like the one below by click on divs with a certain class.
30 Answers
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Javascript and regex: split string and keep the separator
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Use (positive) lookahead so that the regular expression asserts that the special character exists, but does not actually match it:
string.split(/<br \/>(?=&#?[a-zA-Z0-9]+;)/g);
See it in action:
var string = "aaaaaa...
How to load db:seed data into test database automatically?
... that depends on what testing framework you are using and whether you want it to be loaded before every test or just once at the beginning. You could put it in a setup call or in a test_helper.rb file.
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