大约有 30,000 项符合查询结果（耗时：0.0455秒） [XML]
MySQL Great Circle Distance (Haversine formula)
...o search by kilometers instead of miles, replace 3959 with 6371.
SELECT id, ( 3959 * acos( cos( radians(37) ) * cos( radians( lat ) )
* cos( radians( lng ) - radians(-122) ) + sin( radians(37) ) * sin(radians(lat)) ) ) AS distance
FROM markers
HAVING distance < 25
ORDER BY distance
LIMIT ...
Is there a way to change context to iframe in javascript console?
...ts" tab of the dev tools. Anything you run in the JS console will automatically run in the context of the selected iframe.
For example, here I've selected an iframe, and when I type document.location.pathname into the console it returns the src attribute of the iframe, instead of the URL from the ...
@Html.BeginForm Displaying “System.Web.Mvc.Html.MvcForm” on Page
I have a razor view that I added a delete button to inside of an 'if' statement and when the view is rendered in the browser it is displaying "System.Web.Mvc.Html.MvcForm" next to the delete button.
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I want to execute shell commands from Maven's pom.xml
...
Here's what's been working for me:
<plugin>
<artifactId>exec-maven-plugin</artifactId>
<groupId>org.codehaus.mojo</groupId>
<executions>
<execution><!-- Run our version calculation script -->
<id>Version Calculation<...
Java EE 6 @javax.annotation.ManagedBean vs. @javax.inject.Named vs. @javax.faces.ManagedBean
...reotypes and producer methods.
To deploy CDI beans, you must place a file called beans.xml in a META-INF folder on the classpath. Once you do this, then every bean in the package becomes a CDI bean. There are a lot of features in CDI, too many to cover here, but as a quick reference for JSF-like fe...
Select2 doesn't work when embedded in a bootstrap modal
...in bootstrap modal, I can't type anything into it. It's like disabled? Outside the modal select2 works fine.
29 Answers
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How do I keep a label centered in WinForms?
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Some minor additional content for setting programmatically:
Label textLabel = new Label() {
AutoSize = false,
TextAlign = ContentAlignment.MiddleCenter,
Dock = DockStyle.None,
Left = 10,
Width = myDialog.Width - 10
};
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GetProperties() to return all properties for an interface inheritance hierarchy
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@ilkerunal: The usual way: Call GetValue on the retrieved PropertyInfo, passing your instance (whose property value to get) as parameter. Example: var list = new[] { 'a', 'b', 'c' }; var count = typeof(IList).GetPublicProperties().First(i => i.Name ...
Jquery insert new row into table at a certain index
...$('#my_table > tbody:last').append(newRow); // this will add new row inside tbody
$("table#myTable tr").last().after(newRow); // this will add new row outside tbody
//i.e. between thead and tbody
//.befor...
What are database normal forms and can you give examples? [closed]
.... Recall that a primary key can be made up of multiple columns. As Chris said in his response:
The data depends on the key [1NF], the whole key [2NF] and nothing but the key [3NF] (so help me Codd).
2NF
Say you have a table containing courses that are taken in a certain semester, and you have the...