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What does “use strict” do in JavaScript, and what is the reasoning behind it?
...re of ECMAScript 5. John Resig wrote up a nice summary of it.
It's just a string you put in your JavaScript files (either at the top of your file or inside of a function) that looks like this:
"use strict";
Putting it in your code now shouldn't cause any problems with current browsers as it's ju...
How to prevent Browser cache for php site
...e in production enviroment
// Functions
function get_cache_prevent_string( $always = false ) {
return (DEBUGGING || $always) ? date('_Y-m-d_H:i:s') : "";
}
?>
<!-- ... -->
<link rel="stylesheet" type="text/css" href="style.css?version=3.2<?php echo get_cache_preven...
Why should I prefer single 'await Task.WhenAll' over multiple awaits?
...t1; await t2; await t3;
Console.WriteLine("DoWork1 results: {0}", String.Join(", ", t1.Result, t2.Result, t3.Result));
}
catch (Exception x)
{
// ...
}
}
In this case, if all 3 tasks throw exceptions, only the first one will be caught. Any later exception will be ...
How to cancel a Task in await?
...rivate int slowFunc(int a, int b, CancellationToken cancellationToken)
{
string someString = string.Empty;
for (int i = 0; i < 200000; i++)
{
someString += "a";
if (i % 1000 == 0)
cancellationToken.ThrowIfCancellationRequested();
}
return a + b;
}
...
Alternative to google finance api [closed]
...r AAPL, GOOG, and MSFT)
Note that you must append the format to the query string (f=..). For an overview of all of the formats see this page.
For more examples, visit this page.
For XML and JSON-based data, you can do the following:
Don't use YQL (Yahoo Query Language)**
For example:
http://...
Entity Framework and Connection Pooling
...ion still uses traditional database connection with traditional connection string. I believe you can turn off connnection pooling in connection string if you don't want to use it. (read more about SQL Server Connection Pooling (ADO.NET))
Never ever use global context. ObjectContext internally implem...
Create unique constraint with null columns
... quote_ident() as they should and forget to pass identifiers as lower case strings now! Do not use mixed case identifiers in PostgreSQL, if you can avoid it. I have seen a number of desperate requests here stemming from this folly.
– Erwin Brandstetter
Nov 27 '...
Basic example of using .ajax() with JSONP?
...ment that looks like this after it loads the data:
<script>
{['some string 1', 'some data', 'whatever data']}
</script>
However this is a bit inconvenient, because we have to fetch this array from script tag. So JSONP creators decided that this will work better (and it is):
script = ...
How do I replace NA values with zeros in an R dataframe?
...want to apply the replacement to specific nurmeric vectors (leaving say... strings with NA): df[19:28][is.na(df[19:28])] <- 0
– jtdoud
Feb 9 '17 at 18:03
...
MVC Razor view nested foreach's model
...s. Lets look at the simplest overload for
TextBoxFor
public static MvcHtmlString TextBoxFor<TModel, TProperty>(
this HtmlHelper<TModel> htmlHelper,
Expression<Func<TModel, TProperty>> expression
)
First, this is an extension method for a strongly typed HtmlHelper,...