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The difference between fork(), vfork(), exec() and clone()
...good memory management, fork() made a full copy of the parent's memory, so it was pretty expensive. since in many cases a fork() was followed by exec(), which discards the current memory map and creates a new one, it was a needless expense. Nowadays, fork() doesn't copy the memory; it's simply set...
Why is Thread.Sleep so harmful
I often see it mentioned that Thread.Sleep(); should not be used, but I can't understand why this is so. If Thread.Sleep(); can cause trouble, are there any alternative solutions with the same result that would be safe?
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Worst security hole you've seen? [closed]
What is the worst security hole you've ever seen? It is probably a good idea to keep details limited to protect the guilty.
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Django templates: verbose version of a choice
...the field.
Note: in case the standard FormPreview templates are not using it, then you can always provide your own templates for that form, which will contain something like {{ form.get_meal_display }}.
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PHP array delete by value (not key)
... unset($messages[$key]);
}
array_search() returns the key of the element it finds, which can be used to remove that element from the original array using unset(). It will return FALSE on failure, however it can return a false-y value on success (your key may be 0 for example), which is why the str...
Check if a string is html or not
I have a certain string for which I want to check if it is a html or not. I am using regex for the same but not getting the proper result.
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From an array of objects, extract value of a property as array
I have JavaScript object array with the following structure:
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differentiate null=True, blank=True in django
When we add a database field in django we generally write:
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How does the getView() method work when creating your own custom adapter?
...flater takes your layout XML-files and creates different View-objects from its contents.
2: The adapters are built to reuse Views, when a View is scrolled so that is no longer visible, it can be used for one of the new Views appearing. This reused View is the convertView. If this is null it means...
Should the hash code of null always be zero, in .NET
...null as a set member, one can ask what the hash code of null should be. It looks like the framework uses 0 :
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