#columns 4 to the last one myselec<-mydata[ 1, 4 : ncol(mydata)] #put the columns you want to keep in a vector columnsIWantToKeep <- c(4, 5, 6, 10, 12) #subset your DFusing this vector myselec<-mydata[1, columnsIWantToKeep] The same applies to rows… myselec<-mydata[ 4:nrow(mydata),] #get from row 4 to the end myselec<-mydata[ c(1,3,5,7),] #get rows 1,3,5,7 You … Read more
What you are creating is not actually a JSON object. It has nothing to do with JSON, though I can see why you thing it does based on the syntax. It is actually an anonymous type. You can nest these types inside each other, like so (translating your example): var Obj = new { username … Read more
The included file is not behaving as you expect it to. To pull this off you will have to create a global out of the variable (but don’t do it!). You can print_r() the array in the controller, because you’re fetching it from the model. But after that you include the view. When you place … Read more
Let’s try to visualize what happens by adding some more prints: class B{ B(){ System.out.println(“binit”); f(); } public void f(){ System.out.println(“B ctor”); } } class A extends B{ A(){ System.out.println(“ainit”); f(); } @Override public void f(){ System.out.println(“A ctor”); } public static void main(String[] args) { System.out.println(1); A a = new A(); System.out.println(2); a.f(); System.out.println(3); B … Read more
Here is a code of Activity that will automatically close itself after five seconds. public class TestActivity extends ActionBarActivity { private static final int DELAY = 5000; public boolean inactive; Handler mHideHandler = new Handler(); Runnable mHideRunnable = new Runnable() { @Override public void run() { if(inactive) { finish(); } else { mHideHandler.postDelayed(mHideRunnable, DELAY); } … Read more
Let’s take the following sample DataFrame, containing 2 groups of 3 adjacent rows: C1 C2 C3 C4 C5 C6 ABC NaN NaN NaN NaN PK KJ PQR NaN NaN RR SS NaN NaN MNO PO UI NaN NaN NaN NaN XXX AA NaN NaN NaN EE NaN XX1 NaN BB NaN DD NaN FF1 XX2 … Read more
You create an AmazonSNSClient and then invoke listSubscriptionsByTopic() on it. solved Get the list of subscriptions subscribed under a topic in AWS Java SDK [closed]
first of all, earn your element control then change it : const span = document.querySelector(‘span’); span.textContent=”new text”; 5 solved why javascript code changed the innerText,while the page dosen’t? [closed]
Here is an example: <div id=”box”>Content</div> #box { position: relative; width: 60%; background: #ddd; -moz-border-radius: 4px; border-radius: 4px; padding: 2em 1.5em; color: rgba(0,0,0, .8); text-shadow: 0 1px 0 #fff; line-height: 1.5; margin: 60px auto; } #box:before, #box:after { z-index: -1; position: absolute; content: “”; bottom: 15px; left: 10px; width: 50%; top: 80%; max-width:300px; background: rgba(0, … Read more
If I understand the question, you want a method that takes any number of arguments, and returns an object that will create a range of numbers when the [] method is used. This method takes any number of arguments (using the * splat operator), and then returns a proc, which [] can be used on. … Read more
USE ONLY IF YOU WANT TO USE IT AS INHOUSE APP. Write following code in – (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions method if (![[NSUserDefaults standardUserDefaults] objectForKey:IS_APP_RUNNING_FIRST_TIME]) { [[NSUserDefaults standardUserDefaults] setObject:[NSDate date] forKey:IS_APP_RUNNING_FIRST_TIME]; [[NSUserDefaults standardUserDefaults] synchronize]; } else { NSDate * firstDate = [[NSUserDefaults standardUserDefaults] objectForKey:IS_APP_RUNNING_FIRST_TIME]; NSDate * todayDate = [NSDate date]; NSCalendar *gregorian = [[NSCalendar alloc] … Read more
first activity. public class MainActivity extends ActionBarActivity { private Button button; private SharedPreferences preferences; private String[] name = {“aa”, “bb”, “cc”}; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); button=(Button)findViewById(R.id.button1); preferences=getSharedPreferences(“testarray”, MODE_PRIVATE); for(int i=0;i<3;i++) { SharedPreferences.Editor editor=preferences.edit(); editor.putString(“str”+i, name[i]); editor.commit(); } button.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { startActivity(new Intent(MainActivity.this,Secondact.class)); } }); } … Read more
Problem is you are having \n newLine entries in your data try to get in this format. var data=”http:\\14.147.140.93:8080\……\json={“location”: “122121212”,”screen”: “4545458”,”identification”: “ddddd”}”; 1 solved Split a variable in javascript getting Uncaught SyntaxError: Unexpected token ILLEGAL
If you don’t want to install an extra library, you can use pythons urllib2 library that is just as easy for something like connecting to a url. import urllib2 print urllib2.urlopen(“https://www.bitstamp.net/api/transactions/”).read() For parsing that, use pythons json library. solved how to implement request GET in Python [closed]
Why couldn’t regex: <post\\s*author=\”([^\”]+)\”[^>]+>[^</post>]*</post> extract the author in following text. Because [^</post>]* represents a character class and will match everything but the characters <, /, p, o, s, t, and > 0 or more times. That doesn’t happen in your text. As for how to fix it, consider using the following regex <post\s*author=\”([^\”]+?)\”[^>]+>(.|\s)*?<\/post> // obviously, … Read more