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How do you match only valid roman numerals with a regular expression?
...
Fortunately, the range of numbers is limited to 1..3999 or thereabouts. Therefore, you can build up the regex piece-meal.
<opt-thousands-part><opt-hundreds-part><opt-tens-part><opt-units-part>
Each of those parts w...
Write bytes to file
...public static byte[] StringToByteArray(string hex) {
return Enumerable.Range(0, hex.Length)
.Where(x => x % 2 == 0)
.Select(x => Convert.ToByte(hex.Substring(x, 2), 16))
.ToArray();
}
...
Given a number, find the next higher number which has the exact same set of digits as the original n
...r.
def findnext(ii):
iis=list(map(int,str(ii)))
for i in reversed(range(len(iis))):
if i == 0: return ii
if iis[i] > iis[i-1] :
break
left,right=iis[:i],iis[i:]
for k in reversed(range(len(right))):
if right[k]>left[-1]:
r...
How to convert SecureString to System.String?
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If you want to avoid creating a managed string 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 <...
Datatype for storing ip address in SQL Server
...t it can search for addresses in Class 1,2, or 3 subnetworks using indexed range scans (WHERE ip BETWEEN fnBinaryIPv4('132.31.55.00') AND fnBinaryIPv4('132.31.55.255') )
– RBarryYoung
Sep 6 '09 at 21:31
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How do you copy the contents of an array to a std::vector in C++ without looping?
...C-style arrays are perfectly valid containers for most STL algorithms--the raw pointer is equivalent to begin(), and (ptr + n) is equivalent to end().
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Do I have to guard against SQL injection if I used a dropdown?
...mysqli. Mostly by accident, I presume, but anyway, I have to warn you that raw mysqli is not an adequate substitution for the old mysq_* functions. Simply because if used in the old style, it will add no security at all. While it's support for the prepared statements is painful and troublesome, to t...
How to get Linux console window width in Python
... left, top, right, bottom, maxx, maxy) = struct.unpack("hhhhHhhhhhh", csbi.raw)
sizex = right - left + 1
sizey = bottom - top + 1
return sizex, sizey
else:
return None
def _getTerminalSize_tput():
# get terminal width
# src: http://stackoverflow.com/quest...
How to Use Order By for Multiple Columns in Laravel 4?
...coloumn2', 'ASC')
->get();
and the second way to do it is,
Using raw order by:
MyTable::orderByRaw("coloumn1 DESC, coloumn2 ASC");
->get();
Both will produce same query as follow,
SELECT * FROM `my_tables` ORDER BY `coloumn1` DESC, `coloumn2` ASC
As @rmobis specified in commen...
How to get a one-dimensional scalar array as a doctrine dql query result?
... an array of values from the id column of the Auction table.
If this was a raw SQL I would write:
5 Answers
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