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问题 The question is similar to (Update) Add index column to data.frame based on two columns Here my example data.frame: df = read.table(text = 'ID Day Count Count_group 77661 14498 4 5 76552 14498 4 5 37008 14498 4 5 34008 14498 4 5 30004 14497 1 5 30004 14497 1 4 28047 14496 3 4 28049 14496 3 4 29003 14496 3 4 69012 14468 1 4 69007 14467 3 4 69012 14467 3 4 69020 14467 3 4 42003 13896 2 4 42011 13896 2 4 22001 13895 2 4 23007 13895 2 4 28047 14496 3 3 28049 14496 3 3 29003 14496 3 3 69007 14467

问题 I have a sidebar list of links in my wikispace theme that currently uses jQuery to apply a class to each of the sidebar links based on the URL after the .com/. You can see this being applied in the code below... <div class="WikiCustomNav WikiElement wiki"><a href="/" class="">Home</a> <a href="/Calendar" class="calendar">Calendar</a> <a href="/Science" class="science">Science</a> <a href="/Language+Arts" class="language-arts">Language Arts</a> <a href="/Video+Page" class="video-page">Video

问题 I am trying to add this font : http://www.fonts2u.com/vps-dong-da-hoa.font to my website. Here is my CSS : @font-face { font-family: "VPSDODAH"; src: url(http://localhost/blablabla/wp-content/plugins/buddypress/bp-themes/frisco-for-buddypress/VPSDODAH.ttf) format("truetype");} #header h1 a { font-family: "VPSDODAH";} The URL to the font is correct but it's not working, what can it be ? Thank you very much. 回答1: Not all browser support .ttf . Use a font generator to get all the font types ( I

问题 Using git add -p , one can select changes to a file for staging. One can manually change the hunk size (Can I modify git-add's hunk size?), but I would like to know how to change the default hunk size (for example to a single line). 回答1: You can use the GIT_DIFF_OPTS environment variable to tell Git how many lines of context it should include in a hunk every time it has to generate a patch. In your case, you would say: export GIT_DIFF_OPTS=-u0 where the -u0 option (the short version of -

问题 I am trying to replace a Resource of an exe(.NET, C#) file using C# code. I have found this article and made this code (using Mono.Cecil 0.6): AssemblyDefinition asdDefinition = AssemblyFactory.GetAssembly("C:\\File.exe"); EmbeddedResource erTemp = new EmbeddedResource("encFile", ManifestResourceAttributes.Public); erTemp.Data = myNewFileBytes; asdDefinition.MainModule.Resources.RemoveAt(0); asdDefinition.MainModule.Resources.Add(erTemp); AssemblyFactory.SaveAssembly(asdDefinition, "C:\

问题 I want to automatically add files to an Xcode project that is created from scratch (through another IDE) as a post-build step. Our project is set up to call an applescript that makes the appropriate file references in the project, but every attempt to add the file references to the project fails. The core problem seems to be this error: Xcode got an error: file reference id "DCDCC17E13819A8E004B4E75" of Xcode 3 group id "D82DCFB50E8000A5005D6AD8" of project "TestProject" of workspace document

问题 i had a EditText , a button and a spinner . When click the button , the spinner will add a new item with name you entered in the EditText. But here is the question, my adapter.add() method seems doesn't work...here is my code: public class Spr extends Activity { Button bt1; EditText et; ArrayAdapter<CharSequence> adapter; Spinner spinner; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); bt1 = (Button)this

问题 I have a file that I've been working on and then realized that I had a mistake in it a few lines above where I've been working. I quickly fixed the mistake and want to commit it before I commit the rest of my work. Great, this is where git add --patch comes in! Except, I'm being presented with only one hunk incorporating both changes. Is it possible to manually tell git that I want two hunks? 回答1: In addition to 'y' and 'n', one of the answers you can give when it asks you about a hunk is 's'

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: R: losing column names when adding rows to an empty data frame I created an empty dataframe with column names only as follows > compData <- data.frame(A= numeric(0), B= numeric(0)) > compData [1] A B <0 rows> (or 0-length row.names) > compData <- rbind(compData,c(5,443)) > compData X5 X443 1 5 443 in the above after adding one row the column names are changed. How can I add new row data to data-frame? 回答1:

问题 I'd like to have JavaScript objects within another JavaScript object as such: Issues: - {"ID" : "1", "Name" : "Missing Documentation", "Notes" : "Issue1 Notes"} - {"ID" : "2", "Name" : "Software Bug", "Notes" : "Issue2 Notes, blah, blah"} - {"ID" : "2", "Name" : "System Not Ready", "Notes" : "Issue3 Notes, etc"} // etc... So, I'd like "Issues" to hold each of these JavaScript objects, so that I can just say Issues[0].Name, or Issues[2].ID, etc. I've created the outer Issues JavaScript object: