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Fundamental difference between Hashing and Encryption algorithms
...d a (usually) fixed length (or smaller length) output. It can be anything from a simple crc32, to a full blown cryptographic hash function such as MD5 or SHA1/2/256/512. The point is that there's a one-way mapping going on. It's always a many:1 mapping (meaning there will always be collisions) si...
How to convert object array to string array in Java
...ork. It throws java.lang.ArrayStoreException. I'm getting the object array from the toArray method on a generic ArrayList containing my custom type. Is this not expected to work with generics or something?
– Ian Varley
Feb 7 '10 at 19:41
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Omitting all xsi and xsd namespaces when serializing an object in .NET?
...nd of two answers.
If you want to just strip all namespaces arbitrarily from a document during serialization, you can do this by implementing your own XmlWriter.
The easiest way is to derive from XmlTextWriter and override the StartElement method that emits namespaces. The StartElement method ...
How can I get device ID for Admob
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Can we find the device ID from a singed APK, that is published to Google Play?
– Gayan Weerakutti
Jun 30 at 15:12
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Executing JavaScript without a browser?
...oking into Javascript programming without a browser. I want to run scripts from the Linux or Mac OS X command line, much like we run any other scripting language (ruby, php, perl, python...)
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When do items in HTML5 local storage expire?
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@AndresRiofrio I can't find any documentation from Mozilla or Microsoft or the W3C that stipulates any sort of mandatory expiration. Thus I think the answer is that yes, the user agent is supposed to keep stored stuff around forever, or until the user explicitly requests...
How to remove all callbacks from a Handler?
I have a Handler from my sub-Activity that was called by the main Activity . This Handler is used by sub-classes to postDelay some Runnables, and I can't manage them. Now, in the onStop event, I need to remove them before finishing the Activity (somehow I called finish() , but it still call ...
Fragment in ViewPager using FragmentPagerAdapter is blank the second time it is viewed
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I had the same issue. Changing the parent class of my PageAdapter from android.support.v4.app.FragmentPagerAdapter to android.support.v4.app.FragmentStatePagerAdapter solve my ViewPager display issue on "second time"!
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What is the difference between save and export in Docker?
...is "saved" images chain into another docker instance and create containers from these images.
export will fetch the whole container : like a snapshot of a regular VM. Saves the OS of course, but also any change you made, any data file written during the container life. This one is more like a tradit...
JSON.stringify without quotes on properties?
...SON string via native function and reserialize it:
function stringify(obj_from_json) {
if (typeof obj_from_json !== "object" || Array.isArray(obj_from_json)){
// not an object, stringify using native function
return JSON.stringify(obj_from_json);
}
// Implements recursiv...