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Signed to unsigned conversion in C - is it always safe?
...hout a hint. You don't want to cast to an unsigned and then use that as an array index.
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List of encodings that Node.js supports
... converting back to bytes will yield the original bytes. Use a Buffer/Uint8Array for binary data.
– phihag
Sep 14 '19 at 22:12
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Using Excel OleDb to get sheet names IN SHEET ORDER
...ws.Count];
int i = 0;
// Add the sheet name to the string array.
foreach(DataRow row in dt.Rows)
{
excelSheets[i] = row["TABLE_NAME"].ToString();
i++;
}
// Loop through all of the sheets if you want too...
for(int j=0; j...
In C/C++ what's the simplest way to reverse the order of bits in a byte?
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You can squeeze the array into somewhat fewer than 256 bytes if you ignore palindromes.
– wilhelmtell
Apr 8 '10 at 19:56
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What is a handle in C++?
... return something->doit(a, b);
}
Or it uses it as an index to an array/vector:
int doSomething(HANDLE s, int a, int b) {
int index = (int)s;
try {
Something& something = vecSomething[index];
return something.doit(a, b);
} catch (boundscheck& e) {
...
What is the proper way to check if a string is empty in Perl?
... Very useful when you obtained the string by shifting of an array which may have 0 elements.
– Dacav
Nov 13 '11 at 12:45
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How to create a trie in Python
...ation.
pygtrie - a pure python implementation by Google.
datrie - a double array trie implementation based on libdatrie.
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How to save all the variables in the current python session?
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I tried this and found it can't save named arrays though this might be a pickle limitation.
– rhody
Nov 21 '19 at 17:48
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How to Create Deterministic Guids
... .SHA1CryptoServiceProvider()
.ComputeHash(stringbytes);
Array.Resize(ref hashedBytes, 16);
return new Guid(hashedBytes);
}
There are much better ways to generate a unique Guid but this is a way to consistently upgrading a string data key to a Guid data key.
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Check for column name in a SqlDataReader object
...Names = Enumerable.Range(0, dr.FieldCount).Select(i => dr.GetName(i)).ToArray();
Then,
if (fieldNames.Contains("myField"))
{
var myFieldValue = dr["myField"];
...
Edit
Much more efficient one-liner that does not requires to load the schema:
var exists = Enumerable.Range(0, dr.Field...