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Drawing an image from a data URL to a canvas
... use the onload handler when a data URI is involved. Based on experimental tests from this question, it is not safe to do so. The above sequence—create the image, set the onload to use the new image, and then set the src—is necessary for some browsers to surely use the results.
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How can you determine a point is between two other points on a line segment?
...yes's chapter in Beautiful Code covers the design space for a collinearity-test function -- useful background. Vincent's answer helped to improve this one. And it was Hayes who suggested testing only one of the x or the y coordinates; originally the code had and in place of if a.x != b.x else.
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Loading custom configuration files
...figMap = new ExeConfigurationFileMap();
configMap.ExeConfigFilename = @"d:\test\justAConfigFile.config.whateverYouLikeExtension";
Configuration config = ConfigurationManager.OpenMappedExeConfiguration(configMap, ConfigurationUserLevel.None);
If need to access a value within the config you can use ...
CSS scrollbar style cross browser [duplicate]
How can I define a CSS scrollbar style cross browser? I tested this code, it only works in IE and opera, but failed in Chrome, Safari and Firefox.
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Measuring code execution time
...want to know how much time a procedure/function/order takes to finish, for testing purposes.
7 Answers
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Is it pythonic to import inside functions?
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I've broken this rule before for modules that are self-testing. That is, they are normally just used for support, but I define a main for them so that if you run them by themselves you can test their functionality. In that case I sometimes import getopt and cmd just in main, b...
Uninstall all installed gems, in OSX?
...a sane list of default gems which for me is: "gem install bundler json minitest rake rdoc"
– Wil Moore III
May 2 '12 at 8:33
5
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What is the difference between memmove and memcpy?
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You may have noticed that the memmove implementation above doesn't even test if they actually do overlap, it just checks their relative positions, but that alone will make the copy safe. As memcpy usually uses the fastest way possible to copy memory on any system, memmove is usually rather implem...
In C# what is the difference between ToUpper() and ToUpperInvariant()?
...ization;
using System.Threading;
using System.Windows.Forms;
public class Test
{
[STAThread]
static void Main()
{
string invariant = "iii".ToUpperInvariant();
CultureInfo turkey = new CultureInfo("tr-TR");
Thread.CurrentThread.CurrentCulture = turkey;
str...
Initialize a nested struct
...ort string
}
func main() {
c := &Configuration{
Val: "test",
Proxy: Proxy{
Address: "addr",
Port: "port",
},
}
fmt.Println(c)
fmt.Println(c.Proxy.Address)
}
The less proper and ugly way but still works:
c := &Configur...