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What is the most efficient/elegant way to parse a flat table into a tree?
...id, descendant_id) VALUES
(1,1), (1,2), (1,4), (1,6),
(2,2), (2,4),
(3,3), (3,5),
(4,4),
(5,5),
(6,6);
Now you can get a tree starting at node 1 like this:
SELECT f.*
FROM FlatTable f
JOIN ClosureTable a ON (f.id = a.descendant_id)
WHERE a.ancestor_id = 1;
The output (in MySQL c...
Save Screen (program) output to a file
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133
There is a command line option for logging. The output is saved to screenlog.n file, where n is...
How to convert SecureString to System.String?
...ing object, you can access the raw data using Marshal.ReadInt16(IntPtr, Int32):
void HandleSecureString(SecureString value) {
IntPtr valuePtr = IntPtr.Zero;
try {
valuePtr = Marshal.SecureStringToGlobalAllocUnicode(value);
for (int i=0; i < value.Length; i++) {
short unicodeCha...
Move window between tmux clients
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DIG mbl
10366 bronze badges
answered Jun 26 '10 at 10:54
mb14mb14
20.3k44 gold badges515...
Can an enum class be converted to the underlying type?
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edited Jan 23 at 11:09
Trilarion
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a...
Correct idiom for managing multiple chained resources in try-with-resources block?
...t finally blocks so even a failed flush doesn't prevent resource release.
3)
try (FileWriter fw = new FileWriter(file)) {
BufferedWriter bw = new BufferedWriter(fw);
bw.write(text);
}
There's a bug here. Should be:
try (FileWriter fw = new FileWriter(file)) {
BufferedWriter bw = new...
multiple definition of template specialization when using different objects
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131
Intuitively, when you fully specialize something, it doesn't depend on a template parameter any...
Read logcat programmatically within application
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LuisLuis
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C++ STL Vectors: Get iterator from index?
...the same arithmetic.
– MSalters
Jan 3 '13 at 9:29
7
I'd want ot add my five cents to this answer ...
What optimizations can GHC be expected to perform reliably?
...
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