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Read/write files within a Linux kernel module

..., loff_t *pos); Also, filp_open no longer accepts user-space string, so it can be used for kernel access directly (without dance with set_fs). share | improve this answer | ...
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Setting custom UITableViewCells height

...e views to be displayed. There is one label in the cell whose text is a NSString object and the length of string could be variable. Due to this, I cannot set a constant height to the cell in the UITableView 's heightForCellAtIndex method. The cell's height depends on the label's height which ca...
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What's the difference between %s and %d in Python string formatting?

... They are used for formatting strings. %s acts a placeholder for a string while %d acts as a placeholder for a number. Their associated values are passed in via a tuple using the % operator. name = 'marcog' number = 42 print '%s %d' % (name, number) w...
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How to write a large buffer into a binary file in C++, fast?

...stream("file.binary", std::ios::out | std::ios::binary); myfile.write((char*)&data[0], bytes); myfile.close(); auto endTime = std::chrono::high_resolution_clock::now(); return std::chrono::duration_cast<std::chrono::milliseconds>(endTime - startTime).count(); } long long ...
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What is in your Mathematica tool bag? [closed]

... helper function is useful for creating such cells: evaluatableCell[label_String, evaluationFunction_] := ( CellPrint[ TextCell[ "" , "Program" , Evaluatable -> True , CellEvaluationFunction -> (evaluationFunction[#]&) , CellFrameLabels -> {{None...
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How to make the 'cut' command treat same sequental delimiters as one?

... page: -s, --squeeze-repeats replace each input sequence of a repeated character that is listed in SET1 with a single occurrence of that character share | ...
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Python List vs. Array - when to use?

...ctl or fctnl). array.array is also a reasonable way to represent a mutable string in Python 2.x (array('B', bytes)). However, Python 2.6+ and 3.x offer a mutable byte string as bytearray. However, if you want to do math on a homogeneous array of numeric data, then you're much better off using NumPy,...
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Parameterize an SQL IN clause

...ls|scruffy|rubyonrails|' LIKE '%|' + Name + '|%' So here's the C# code: string[] tags = new string[] { "ruby", "rails", "scruffy", "rubyonrails" }; const string cmdText = "select * from tags where '|' + @tags + '|' like '%|' + Name + '|%'"; using (SqlCommand cmd = new SqlCommand(cmdText)) { c...
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Semicolon before self-invoking function? [duplicate]

...: there isn't one! (Learn only one rule and you too can enjoy life without extra semicolons ;-) Since I write in a semicolon-free style I thus always write it as (where the function-expression can naturally span multiple lines): ;(FunctionExpression)() In my case it isn't about "safety" or try...
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Catch All Bugs with BugTrap! - 开源 & Github - 清泛网移动版 - 专注C/C++及内核技术

...ack-box was not customizable, it didn't support mini-dump files or Unicode strings, and it didn't have any server. In spite of these limitations, it was an excellent starting point because I knew exactly what kind of a tool I wanted. I started working on my own tool in the hope of making it flexible...