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Practical non-image based CAPTCHA approaches?

... twist on this that I use. Make the hidden value an encrypted time set to now. Upon post back, verify that between 10 seconds and 10 minutes has elapsed. This foils tricksters who would try to plug in some always-valid value. – Tim Scott Feb 7 '09 at 22:41 ...
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Scale image to fit a bounding box

...n it's container, and CSS can't do this. The reason is that CSS does not know what the page looks like. It sets rules beforehand, but only after that it is that the elements get rendered and you know exactly what sizes and ratios you're dealing with. The only way to detect that is with JavaScript. ...
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Clearing intent

...to reset the intent like this setIntent(new Intent()) and its working fine now. – Shubhral Jun 20 '17 at 11:46  |  show 5 more comments ...
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Handling the window closing event with WPF / MVVM Light Toolkit

...his solution is irrelevant in MVVM environment. The code behind shouldn't know about the ViewModel. – Jacob Oct 9 '14 at 4:50 ...
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The following untracked working tree files would be overwritten by merge, but I don't care

...ith the following: -x ignored files are also removed as well as files unknown to Git. -d remove untracked directories in addition to untracked files. -f is required to force it to run. Here is the link that can be helpful as well. ...
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Variable declared in for-loop is local variable?

...< 5; i++) { } // 'i' is only declared in the method scope now, // no longer in the child scope -> valid. i = 4; // 'i' is declared in the method's scope -> valid. int A = i; } EDIT: The C# compiler could of course be changed to allow this code to compile ...
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FB OpenGraph og:image not pulling images (possibly https?)

...mage URIs using HTTP work just fine and URIs using HTTPS do not. They have now acknowledged that they are "looking into this." Update: As of 2020, the bug is no longer visible in Facebook's ticket system. They never responded and I don't believe this behavior has changed. However, specifying HTTPS ...
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How fast is D compared to C++?

... @CyberShadow Thanks! With these flags runtime improves considerably. Now D is at 12.9 s. But still runs more than 3 times as long. @Matthieu M. I would not mind to test a program with boundschecking in slow motion and once it is debugged let it do its computations without boundschecking. (I do...
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Method has the same erasure as another method in type

... formally equal to my superclass' signature, your method still overrides. Now, time passes and you decide you are ready to update your class. But you screw up a little, and instead of editing the existing, raw toList() method, you add a new method like this: class Overrider extends CollectionConve...
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How to check command line parameter in “.bat” file?

...n do an if/else switch on -b: if "%~1"=="-b" (goto specific) else goto unknown Surrounding the parameters with quotes makes checking for things like blank/empty/missing parameters easier. "~" ensures double quotes are stripped if they were on the command line argument. ...