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Installing PDO driver on MySQL Linux server
I was suggested, not long ago, to change my code to use PDO in order to parameterize my queries and safely save HTML in the database.
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Sort rows in data.table in decreasing order on string key `order(-x,v)` gives error on data.table 1.
...l attempt and the following answer is no longer necessary.
You can use DT[order(-rank(x), y)].
x y v
1: c 1 7
2: c 3 8
3: c 6 9
4: b 1 1
5: b 3 2
6: b 6 3
7: a 1 4
8: a 3 5
9: a 6 6
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Is errno thread-safe?
...umber by several library functions. If a macro definition is suppressed in order to access an actual object, or a program defines an identifier with the name errno, the behavior is undefined. [...continued...]
– Jonathan Leffler
Aug 25 '14 at 16:26
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Any way to properly pretty-print ordered dictionaries?
...ON format.
You lose some type information, but it looks nice and keeps the order.
import json
pprint(data, indent=4)
# ^ugly
print(json.dumps(data, indent=4))
# ^nice
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n-grams in python, four, five, six grams?
...'simplest text i', 'text i could', 'i could think', 'could think of']
In order to keep the ngrams in array format just remove ' '.join
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Pass in an array of Deferreds to $.when()
...er will require, that handler would need to process the arguments array in order to retrieve the result of each promise.
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How do I pass a unique_ptr argument to a constructor or a function?
... Value
Base(std::unique_ptr<Base> n)
: next(std::move(n)) {}
In order for the user to call this, they must do one of the following:
Base newBase(std::move(nextBase));
Base fromTemp(std::unique_ptr<Base>(new Base(...));
To take a unique pointer by value means that you are transfer...
What's the point of NSAssert, actually?
...g a method which calculates the sum of two greater than zero integers. In order to make sure the method was always used as intended you would probably put an assert which tests that condition.
Short answer: They enforce that your code is used only as intended.
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How do I safely pass objects, especially STL objects, to and from a DLL?
...ency in the way your class's data members are aligned in memory.
Member reordering
If your class is not standard-layout, the compiler can rearrange its data members in memory. There is no standard for how this is done, so any data rearranging can cause incompatibilities between compilers. Passing ...
The character encoding of the HTML document was not declared
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