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Selecting only numeric columns from a data frame
... data should be as.numeric. Perhaps you have factor data that's in numeric form? You should open a new question.
– Brandon Bertelsen
Sep 2 '16 at 23:38
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Angularjs - display current date
I got a view in angularjs and I'm just trying to display the current date(formatted). I thought something like <span>{{Date.now() | date:'yyyy-MM-dd'}}</span> should display the current date.
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Save Javascript objects in sessionStorage
... Some systems like Web Api authentication return objects in the form of Object { propertyOneWithoutQuotes : "<value1>", ... propertyNWithoutQuotes : "<valueN>" } which need to go through "stringify". If there are multiple sources it might be better to use stringify to standard...
Make an Installation program for C# applications and include .NET Framework installer into the setup
...k setup in your installation package:
Here is my step-by-step for windows forms application:
Create setup project. You can use Setup Wizard.
Select project type.
Select output.
Hit Finish.
Open setup project properties.
Chose to include .NET framework.
Build setup project
Check output
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DropDownList's SelectedIndexChanged event not firing
...me and check for the [Page_IsValid] property
If the page is not valid the form will not submit and therefore not fire the event.
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为AppInventor2开发拓展(Extension) · App Inventor 2 中文网
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public Clipboard(ComponentContainer container) {
super(container.$form());
this.container = container;
context = (Context) container.$context();
Log.d(LOG_TAG, "Clipboard Created");
}
@SimpleProperty(category = PropertyCategory.BEHAVIOR,
description = "操作成功...
How to create a self-signed certificate with OpenSSL
...'s default browser, do not let you do it. So it will never work on the platform.
The issue of browsers (and other similar user agents) not trusting self-signed certificates is going to be a big problem in the Internet of Things (IoT). For example, what is going to happen when you connect to your th...
In plain English, what does “git reset” do?
...>).
Arguments
Paraphrasing the man page, most common usage is of the form git reset [<commit>] [paths...], which will reset the given paths to their state from the given commit. If the paths aren't provided, the entire tree is reset, and if the commit isn't provided, it's taken to be HEA...
Passing parameters in rails redirect_to
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If you have some form data for example sent to home#action, now you want to redirect them to house#act while keeping the parameters, you can do this
redirect_to act_house_path(request.parameters)
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How to add new column to MYSQL table?
...db->mysqli_real_escape_string($_GET['input']); assuming you submit your form normally. If it's ajax it's a little more complex.
– Glitch Desire
Apr 19 '13 at 21:48
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