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Why must we define both == and != in C#?
The C# compiler requires that whenever a custom type defines operator == , it must also define != (see here ).
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How to convert a Drawable to a Bitmap?
I would like to set a certain Drawable as the device's wallpaper, but all wallpaper functions accept Bitmap s only. I cannot use WallpaperManager because I'm pre 2.1.
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How to explain callbacks in plain english? How are they different from calling one function from ano
How to explain callbacks in plain English? How are they different from calling one function from another function taking some context from the calling function? How can their power be explained to a novice programmer?
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CORS - What is the motivation behind introducing preflight requests?
Cross-origin resource sharing is a mechanism that allows a web page to make XMLHttpRequests to another domain (from wikipedia ).
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Why are joins bad when considering scalability?
Why are joins bad or 'slow'. I know i heard this more then once. I found this quote
16 Answers
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Java - removing first character of a string
In Java, I have a String:
12 Answers
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What are the differences between Perl, Python, AWK and sed? [closed]
just want to know what are the main differences among them? and the power of each language (where it's better to use it).
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How was the first compiler written?
I heard about the chicken and the egg and bootstrapping. I have a few questions.
6 Answers
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How to identify numpy types in python?
How can one reliably determine if an object has a numpy type?
6 Answers
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What is memory fragmentation?
I've heard the term "memory fragmentation" used a few times in the context of C++ dynamic memory allocation. I've found some questions about how to deal with memory fragmentation, but can't find a direct question that deals with it itself. So:
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