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How to validate GUID is a GUID
...e(inputString)
(http://msdn.microsoft.com/en-us/library/system.guid.parse.aspx)
bool isValid = Guid.TryParse(inputString, out guidOutput)
http://msdn.microsoft.com/en-us/library/system.guid.tryparse.aspx
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What is the difference between syntax and semantics in programming languages?
... type then a name and then a semicolon, to be syntactically correct.
Type token;
On the other hand, the semantics is about meaning.
A compiler or interpreter could complain about syntax errors. Your co-workers will complain about semantics.
...
How can I ignore a property when serializing using the DataContractSerializer?
...//msdn.microsoft.com/en-us/library/system.nonserializedattribute(v=vs.110).aspx
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presentViewController:animated:YES view will not appear until user taps again
...ontroller {
override public class func initialize() {
struct DispatchToken {
static var token: dispatch_once_t = 0
}
if self != UIViewController.self {
return
}
dispatch_once(&DispatchToken.token) {
let originalSelector = Selector("presentViewController:an...
How do you compare two version Strings in Java?
...
Tokenize the strings with the dot as delimiter and then compare the integer translation side by side, beginning from the left.
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Is it better practice to use String.format over string Concatenation in Java?
...d also get into the habit of specifying argument positions for your format tokens as well:
"Hello %1$s the time is %2$t"
This can then be localised and have the name and time tokens swapped without requiring a recompile of the executable to account for the different ordering. With argument positi...
What are the differences in die() and exit() in PHP?
...
As stated before, these two commands produce the same parser token.
BUT
There is a small difference, and that is how long it takes the parser to return the token.
I haven't studied the PHP parser, but if it's a long list of functions starting with "d", and a shorter list starting wi...
Split long commands in multiple lines through Windows batch file
...ere exist one curiosity with redirection before the caret.
If you place a token at the caret the token is removed.
echo Test5
echo one <nul ^
& echo two
--- Output ---
Test5
one
two
echo Test6
echo one <nul ThisTokenIsLost^
& echo two
--- Output ---
Test6
one
two
And it is also p...
What to add for the update portion in ConcurrentDictionary AddOrUpdate
...setter
(See: http://blogs.msdn.com/b/pfxteam/archive/2010/01/08/9945809.aspx)
The indexer is atomic, too. If you pass a function instead, it might not be:
All of these operations are atomic and are thread-safe with regards to all other operations on the ConcurrentDictionary. The only caveat...
Are there any disadvantages to always using nvarchar(MAX)?
...tors, including sp_tableoptions: msdn.microsoft.com/en-us/library/ms173530.aspx. VARCHAR(255) types can also b pushed out of row, the 'overhead' mentioned may be exactly the same for MAX and 255. It compares MAX types with TEXT types, when they are distinct as it gets (completely different API to ma...