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Get a specific bit from byte

...var bit = (b & (1 << bitNumber-1)) != 0; EDIT: To add a little more detail because there are a lot of similar answers with no explanation: A bitwise AND compares each number, bit-by-bit, using an AND join to produce a number that is the combination of bits where both the first bit and s...
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Rails - How to use a Helper Inside a Controller

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Memcached vs APC which one should I choose? [closed]

...ad of APC? It will be good to keep only one if in the future you will have more machines. right? Or use them both, one for opcode and the other for extensible caching? – Adib Aroui Jul 25 '13 at 23:29 ...
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What is a elegant way in Ruby to tell if a variable is a Hash or an Array?

... I'd also have liked more answers going into detail regarding duck-typing, since the original author apparently was looking for a ruby way of doing a type check. – NobodysNightmare Aug 25 '15 at 11:55 ...
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Should logger be private static or not

...method is that it returns the class of the current instance. Normally it's more desired the logging to be associated with the class where the code is. For example if the logging code is in class Parent then we want the logging to be associated with Parent even though the executing instance is and in...
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How to sign an android apk file

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How to get instance variables in Python?

... FWIW, the inspect module gives you a more reliable method than relying on dict, which not all instances have. – Thomas Wouters Sep 20 '08 at 19:40 ...
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“Unable to find remote helper for 'https'” during git clone

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Start / Stop a Windows Service from a non-Administrator user account

... access control list (SACL). (This is a Standard Access Right, please read more http://msdn.microsoft.com/en-us/library/aa379607(VS.85).aspx) object_guid - n/a, inherit_object_guid - n/a, account_sid - "SY": Local system. The corresponding RID is SECURITY_LOCAL_SYSTEM_RID. Now what we need to do i...
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Xcode doesn't show the line that causes a crash

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