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How do you determine the ideal buffer size when using FileInputStream?
...buffer size. If you pick a size that's too small, you'll waste time doing extra I/O operations and extra function calls. If you pick a size that's too big, you'll start seeing a lot of cache misses which will really slow you down. Don't use a buffer bigger than your L2 cache size.
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Getting the first character of a string with $str[0]
I want to get the first letter of a string and I've noticed that $str[0] works great. I am just not sure whether this is 'good practice', as that notation is generally used with arrays. This feature doesn't seem to be very well documented so I'm turning to you guys to tell me if it's all right –...
How to import CSV file data into a PostgreSQL table?
...col1': sqlalchemy.types.NUMERIC,
'col2': sqlalchemy.types.String}) #Datatypes should be [sqlalchemy types][1]
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How to convert a String into an ArrayList?
In my String, I can have an arbitrary number of words which are comma separated. I wanted each word added into an ArrayList. E.g.:
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Why am I getting “Cannot Connect to Server - A network-related or instance-specific error”?
...the actual folder path) and port (default is 1433)
Check your connection string as well
From FIX : ERROR : Could not open a connection to SQL Server:
Check if your SQL server services is up and running properly:
Go to All Programs > Microsoft SQL Server 2008 > Configuration...
How can I connect to Android with ADB over TCP? [closed]
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"adb tcpip port" literally? that just returns the string "error: device not found" -- is there a typo? Or should I replace something here?
– BrainSlugs83
Aug 8 '13 at 17:46
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How can I strip all punctuation from a string in JavaScript using regex?
If I have a string with any type of non-alphanumeric character in it:
13 Answers
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TCP: can two different sockets share a port?
...protocols as well (for example, on unix sockets, a "port" is essentially a string).
The main problem is the following: if an incoming packet arrives, the kernel can identify its socket by its destination port number. It is a most common way, but it is not the only possibility:
Sockets can be iden...
How do I print to the debug output window in a Win32 app?
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You can use OutputDebugString. OutputDebugString is a macro that depending on your build options either maps to OutputDebugStringA(char const*) or OutputDebugStringW(wchar_t const*). In the later case you will have to supply a wide character string...
techniques for obscuring sensitive strings in C++
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But, if you just want to make sure the key doesn't show up when running strings on your binary, you could for instance make sure that the key is not within the printable range.
Obscuring key with XOR
For instance, you could use XOR to split the key into two byte arrays:
key = key1 XOR key2
I...