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How do I make a transparent canvas in html5?
...e top layer to transparent at the start of rendering every new frame. I finally found the answer: it's not using globalAlpha, and it's not using a rgba() color. The simple, effective answer is:
context.clearRect(0,0,width,height);
...
What's the difference between Invoke() and BeginInvoke()
...y, on a threadpool thread.
Control.Invoke: Executes on the UI thread, but calling thread waits for completion before continuing.
Control.BeginInvoke: Executes on the UI thread, and calling thread doesn't wait for completion.
Tim's answer mentions when you might want to use BeginInvoke - although i...
Library not loaded: /usr/local/opt/readline/lib/libreadline.6.2.dylib
I just installed posgresql with homebrew and when I go on to type the command
22 Answers
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What is the difference between PS1 and PROMPT_COMMAND
...ing it as he describes is better. It's more maintainable than what I originally wrote above, where the PS1 variable is set inside the PROMPT_COMMAND, which itself is a super complicated string that is evaluated at runtime by bash. It works, but it's more complicated than it needs to be. To be fair I...
How to combine paths in Java?
...ubDirectory, "baz.txt");
If you want it back as a string later, you can call getPath(). Indeed, if you really wanted to mimic Path.Combine, you could just write something like:
public static String combine(String path1, String path2)
{
File file1 = new File(path1);
File file2 = new File(f...
Programmatically add custom event in the iPhone Calendar
...d to commit your event now or pass the "commit" param to your save/remove call
Everything else stays the same...
Add the EventKit framework and #import <EventKit/EventKit.h> to your code.
In my example, I have a NSString *savedEventId instance property.
To add an event:
EKEventStore *...
How to create a DialogFragment without title?
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Dialog fragment has setStyle method, which should be called before view creation Java Doc. Also style of the dialog can be set with the same method
public static MyDialogFragment newInstance() {
MyDialogFragment mDialogFragment = new MyDialogFragment();
//Set Ar...
The differences between .build, .create, and .create! and when should they be used?
...< 3.x
The most important part, however, is that these methods can be called through an association (has_many, etc.) to automatically link the two models.
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error: No resource identifier found for attribute 'adSize' in package 'com.google.example' main.xml
... I had a different problem, but the same solution worked. Basically I was using a layout file that references the /res file which I changed to /lib per the instructions here and it worked. Can you provide an explanation of what is going on here?
– RightHandedMonkey...
How to append the output to a file?
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I'm using this for all output capturing program.sh 2>&1 | tee -a screen.log. "-a" stands for append.
– Xdg
Jul 17 '14 at 18:38
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