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How to read a CSV file into a .NET Datatable
...ns values, so coming up with a regex that would split the line was kinda challenging. The OleDbProvider inferred the schema correctly.
– Galilyou
Jan 14 '12 at 10:41
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Check if Python Package is installed
What's a good way to check if a package is installed while within a Python script? I know it's easy from the interpreter, but I need to do it within a script.
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Skip certain tables with mysqldump
...table=schema.table2 > db-data.sql
The resulting two files are structurally sound but the dumped data is now ~500MB rather than 9GB, much better for me. I can now import these two files into another database for testing purposes without having to worry about manipulating 9GB of data or running o...
Get the last non-empty cell in a column in Google Sheets
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I am not really bothered about eloquence in this case as long as it works like a charm (which it does) - thanks a lot Sam!
– MichaelS
Nov 17 '11 at 9:46
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How do I clear/delete the current line in terminal?
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The line deleted by Ctrl-U is recallable with Ctrl-Y, too.
– keks
Dec 4 '12 at 10:59
67
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Mean per group in a data.frame [duplicate]
... the many ways to specify the variables to act on. Here, vars(-Month) says all variables except Month.
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Why is unsigned integer overflow defined behavior but signed integer overflow isn't?
...to implement with the integer representation it used. C implementations usually used the same representation used by the CPU - so the overflow behavior followed from the integer representation used by the CPU.
In practice, it is only the representations for signed values that may differ according to...
Android: Temporarily disable orientation changes in an Activity
...r, I noticed that if I rotate my phone it restarts the activity which is REALLY bad for the process that was running, and I get a Force Close.
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How to make return key on iPhone make keyboard disappear?
...ate after you init the textfield in the .m:
yourTextField = [[UITextField alloc] initWithFrame:yourFrame];
//....
//....
//Setting the textField's properties
//....
//The next line is important!!
yourTextField.delegate = self; //self references the viewcontroller or view your textField is on
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How to print binary tree diagram?
..., int level, int maxLevel) {
if (nodes.isEmpty() || BTreePrinter.isAllElementsNull(nodes))
return;
int floor = maxLevel - level;
int endgeLines = (int) Math.pow(2, (Math.max(floor - 1, 0)));
int firstSpaces = (int) Math.pow(2, (floor)) - 1;
int be...