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(this == null) in C#!
...y, T Default)
{
try
{
if (primary != null && !(primary is DBNull))
return (T)Convert.ChangeType(primary, typeof(T));
else if (Default.GetType() == typeof(T))
return Default;
}
catch (Exception e)
...
F# changes to OCaml [closed]
... is derived from OCaml, but what major items are missing or added? Specifically I'm curious as to whether the resources available for learning OCaml are also useful to someone who wants to learn F#.
...
__lt__ instead of __cmp__
...(or a metaclass, or a class decorator if your taste runs that way).
For example:
class ComparableMixin:
def __eq__(self, other):
return not self<other and not other<self
def __ne__(self, other):
return self<other or other<self
def __gt__(self, other):
return other<...
Is “argv[0] = name-of-executable” an accepted standard or just a common convention?
...fun but you really need to go to the standards documents to be sure. For example, ISO C11 states (my emphasis):
If the value of argc is greater than zero, the string pointed to by argv[0] represents the program name; argv[0][0] shall be the null character if the program name is not available fro...
How do I determine the size of an object in Python?
... is managed by the
garbage collector.
See recursive sizeof recipe for an example of using getsizeof() recursively to find the size of containers and all their contents.
Usage example, in python 3.0:
>>> import sys
>>> x = 2
>>> sys.getsizeof(x)
24
>>> sys.getsize...
How do I Search/Find and Replace in a standard string?
...
Why not implement your own replace?
void myReplace(std::string& str,
const std::string& oldStr,
const std::string& newStr)
{
std::string::size_type pos = 0u;
while((pos = str.find(oldStr, pos)) != std::string::npos){
str.replace(pos, old...
Disable password authentication for SSH [closed]
...swordAuthentication yes/PasswordAuthentication no/g' /etc/ssh/sshd_config && service ssh restart
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How to find corresponding log files folder for a web site?
...ated other than the Default Web Site which has an Web Site ID of 1.
For example:
W3SVC1
W3SVC719499532
W3SVC383732556
Knowing which web site these being to is a problem as it requires you to manually look at each web site. The following VB script will allow you to output the ID and name.
Sav...
Deleting Row in SQLite in Android
...ike prepared statements in SQLite? I have used this id=? kinda syntax with PHP before and it seems very similar to that.
– GeekWithGlasses
Nov 12 '18 at 7:00
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...
How do I sort an observable collection?
... return -1; // decide how to handle error case
}
usage:
Sample with an observer (used a Person class to keep it simple)
public class Person:IComparable<Person>,IEquatable<Person>
{
public string Name { get; set; }
public ...