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How to fix the flickering in User controls

...Params cp = base.CreateParams; cp.ExStyle |= 0x02000000; // Turn on WS_EX_COMPOSITED return cp; } } There are many things you can do to improve painting speed, to the point that the flicker isn't noticeable anymore. Start by tackling the BackgroundImage. They can be really expensive ...
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Adding custom radio buttons in android

...ransparent: <RadioButton android:id="@+id/radio0" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@null" android:button="@drawable/yourbuttonbackground" android:checked="true" android:text="RadioButton1" /> If you would ...
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Replace all non-alphanumeric characters in a string

... Use \W which is equivalent to [^a-zA-Z0-9_]. Check the documentation, https://docs.python.org/2/library/re.html Import re s = 'h^&ell`.,|o w]{+orld' replaced_string = re.sub(r'\W+', '*', s) output: 'h*ell*o*w*orld' update: This solution will exclude undersco...
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overlay two images in android to set an imageview

...g="utf-8"?> <RelativeLayout android:id="@+id/widget30" android:layout_width="fill_parent" android:layout_height="fill_parent" xmlns:android="http://schemas.android.com/apk/res/android" > <ImageView android:id="@+id/widget39" android:layout_width="219px" android:layout_height="225px" andr...
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Does R have an assert statement as in python?

...ndition that will throw an error in your program. Here's an example: Less_Than_8 = function(x) return(x < 8) for (i in 1:10) { print(i) stopifnot(Less_Than_8(i)) } This will print the numbers 1 through 8, then print a message that says Error: Less_Than_8(i) is not TRUE It would be ni...
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How do I list loaded plugins in Vim?

... " where was an option set :scriptnames : list all plugins, _vimrcs loaded (super) :verbose set history? : reveals value of history and where set :function : list functions :func SearchCompl : List particular function ...
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Save ArrayList to SharedPreferences

... list to preference SharedPreferences prefs = getSharedPreferences(SHARED_PREFS_FILE, Context.MODE_PRIVATE); Editor editor = prefs.edit(); try { editor.putString(TASKS, ObjectSerializer.serialize(currentTasks)); } catch (IOException e) { e.printStackTrace(); } editor.commit(); } ...
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How can I have linebreaks in my long LaTeX equations?

...can be precisely controlled. e.g. \begin{align*} x&+y+\dots+\dots+x_100000000\\ &+x_100000001+\dots+\dots \end{align*} which would line up the first plus signs of each line... but obviously, you can set the alignments wherever you like. ...
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UIButton: Making the hit area larger than the default hit area

...utton (Extensions) @dynamic hitTestEdgeInsets; static const NSString *KEY_HIT_TEST_EDGE_INSETS = @"HitTestEdgeInsets"; -(void)setHitTestEdgeInsets:(UIEdgeInsets)hitTestEdgeInsets { NSValue *value = [NSValue value:&hitTestEdgeInsets withObjCType:@encode(UIEdgeInsets)]; objc_setAssociat...
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Intro to GPU programming [closed]

...There are tons of cool materials to read. http://www.nvidia.com/object/cuda_home.html Hello world would be to do any kind of calculation using GPU. Hope that helps. share | improve this answer ...