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iterating over each character of a String in ruby 1.8.6 (each_char)
... in an ASCII string:
"ABCDEFG".each_byte do |i|
puts i.chr # Fixnum#chr converts any number to the ASCII char it represents
end
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Multiple Updates in MySQL
...u can use INSERT ... ON DUPLICATE KEY UPDATE.
Using your example:
INSERT INTO table (id,Col1,Col2) VALUES (1,1,1),(2,2,3),(3,9,3),(4,10,12)
ON DUPLICATE KEY UPDATE Col1=VALUES(Col1),Col2=VALUES(Col2);
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How to get the first column of a pandas DataFrame as a Series?
...
In [7]: df.iloc[:,0]
Out[7]:
0 1
1 2
2 3
3 4
Name: x, dtype: int64
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How to check if AlarmManager already has an alarm set?
... solution. Let's say you have registered a repeating alarm with a pending intent like this:
Intent intent = new Intent("com.my.package.MY_UNIQUE_ACTION");
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0,
intent, PendingIntent.FLAG_UPDATE_C...
Exception thrown in NSOrderedSet generated accessors
... @DerekH isEqualToSet is a method only NSSet has, so my guess is you've converted, created, or are treating a pointer as an NSArray before passing back to the NSManagedObject, which should if any reason be calling isEqualToOrderedSet to determine if the set needs to even change or be left as is.
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Why use String.Format? [duplicate]
...fic number of + operators all specified in a single expression it will be converted, by the compiler, into a single call to string.Concat, and there will not be any intermediate strings created. Using a StringBuilder would in fact hurt performance, not help it, since Concat can create an internal ...
How to get the date from jQuery UI datepicker
...st parameter is in this case the selected Date as String. Use parseDate to convert it to a JS Date Object.
See http://docs.jquery.com/UI/Datepicker for the full jQuery UI DatePicker reference.
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MySQL: how to get the difference between two timestamps in seconds
...nd the expression.
Alternatively, you can use TIMEDIFF(ts1, ts2) and then convert the time result to seconds with TIME_TO_SEC().
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System.Timers.Timer vs System.Threading.Timer
...hat there is a difference between the two as it pertains to how small your intervals can be.
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How to make an ImageView with rounded corners?
...graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Bitmap.Config;
import android.graphics.PorterDuff.Mode;
public class ImageHelper {
pub...