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What is the correct way to create a single-instance WPF application?
....Msg == NativeMethods.WM_SHOWME) {
ShowMe();
}
base.WndProc(ref m);
}
private void ShowMe()
{
if(WindowState == FormWindowState.Minimized) {
WindowState = FormWindowState.Normal;
}
// get our current "TopMost" value (ours wi...
How many threads is too many?
...he request is received. I do this because almost every request makes a database query. I am using a threadpool library to cut down on construction/destruction of threads.
...
What is “2's Complement”?
... 22 + 1 × 21 + 1 × 20and if you work it out, that turns out to equal 15 (base 10). That's because it is 8+4+2+1 = 15.
This is all well and good for positive numbers. It even works for negative numbers if you're willing to just stick a minus sign in front of them, as humans do with decimal nu...
What is a plain English explanation of “Big O” notation?
...mparison between algorithms to a single variable. That variable is chosen based on observations or assumptions. For example, sorting algorithms are typically compared based on comparison operations (comparing two nodes to determine their relative ordering). This assumes that comparison is expensi...
Unit testing that events are raised in C# (in order)
...her counts how many times a specific event has been called. Although it is based on his code I find it more useful in my tests.
[TestMethod]
public void Test_ThatMyEventIsRaised()
{
Dictionary<string, int> receivedEvents = new Dictionary<string, int>();
MyClass myClass = new MyC...
SQLAlchemy: cascade delete
...ld object from parent.children, should that object be deleted from the database, or should only it's reference to the parent be removed (ie. set parentid column to null, instead of deleting the row)
– Steven
Feb 8 '16 at 13:04
...
(![]+[])[+[]]… Explain why this works
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How do I get bash completion to work with aliases?
...string
# Generate a wrapper completion function (completer) for an alias
# based on the command and the given arguments, if there is a
# completer for the command, and set the wrapper as the completer for
# the alias.
function wrap_alias() {
[[ "$#" == 3 ]] || return 1
local alias_name="$1"
l...
Build an ASCII chart of the most commonly used words in a given text [closed]
...
Ruby 1.9, 185 chars
(heavily based on the other Ruby solutions)
w=($<.read.downcase.scan(/[a-z]+/)-%w{the and of to a i it in or is}).group_by{|x|x}.map{|x,y|[-y.size,x]}.sort[0,22]
k,l=w[0]
puts [?\s+?_*m=76-l.size,w.map{|f,x|?|+?_*(f*m/k)+"| "+x}]
...
Determine the type of an object?
...ution when you want to deal with errors, but not when deciding on behavior based on type.
– Rens van der Heijden
Mar 12 '16 at 12:02
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