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SQL Server indexes - ascending or descending, what difference does it make?
...
CREATE TABLE T1( [ID] [int] IDENTITY NOT NULL,
[Filler] [char](8000) NULL,
PRIMARY KEY CLUSTERED ([ID] ASC))
The Query
SELECT TOP 10 *
FROM T1
ORDER BY ID DESC
Uses an ordered scan with scan direction BACKWARD as can be seen in the Execution Plan. There is a s...
Using Razor within JavaScript
... var description = '@(Model.Description)';
var contentString = '<h3>' + title + '</h3>' + '<p>' + description + '</p>'
var infowindow = new google.maps.InfoWindow({
content: contentString
});
var marke...
How do you execute an arbitrary native command from a string?
...ress my need with the following scenario: Write a function that accepts a string to be run as a native command.
4 Answer...
Why use strict and warnings?
...erl to code properly which could be forcing declaration, being explicit on strings and subs i.e. barewords or using refs with caution. Note: if there are errors use strict will abort the execution if used.
While use warnings; will help you find typing mistakes in program like you missed a semicolon...
LINQ equivalent of foreach for IEnumerable
...umerable<char> enumerable = new[] {'a', 'b', 'c'};
var sb = new StringBuilder();
enumerable
.ForEach(c => sb.Append("1"))
.ForEach(c => sb.Append("2"))
.ToList();
Assert.That(sb.ToString(), Is.EqualTo("121212"));
}
If you remove the ToList() in th...
Why use the INCLUDE clause when creating an index?
...erts/deletes require the index to be updated/sorted anyway and thus little extra overhead is associated with storing off a few extra columns while already updating the index. The overhead is the extra memory and CPU used to store redundant info on the index.
If the columns you consider to add as in...
Foreach loop, determine which is the last iteration of the loop
...es in your collection. For example, if you're working with a collection of strings, and there are any duplicates, then that "different with the last item" code will execute for every occurrence of the last item in the list.
– muttley91
Sep 27 '13 at 18:22
...
Getting Http Status code number (200, 301, 404, etc.) from HttpWebRequest and HttpWebResponse
...nsole.WriteLine("Response Code: " + (int)statusCode + " - " + statusCode.ToString());
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PHP_SELF vs PATH_INFO vs SCRIPT_NAME vs REQUEST_URI
...t these variables represent in a general context with a path_info, a query string, some redirection, some aliases, on different operating systems, from CLI vs SERVER, etc.
– user2066805
Dec 15 '15 at 22:35
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iPhone get SSID without private library
...s: %@", __func__, interfaceNames);
NSDictionary *SSIDInfo;
for (NSString *interfaceName in interfaceNames) {
SSIDInfo = CFBridgingRelease(
CNCopyCurrentNetworkInfo((__bridge CFStringRef)interfaceName));
NSLog(@"%s: %@ => %@", __func__, interfaceName, SSIDInfo)...