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Cross-thread operation not valid: Control 'textBox1' accessed from a thread other than the thread it
...le:
How to: Make Thread-Safe Calls to Windows Forms Controls
So instead of setting the text property directly in the serialport1_DataReceived method, use this pattern:
delegate void SetTextCallback(string text);
private void SetText(string text)
{
// InvokeRequired required compares the thread ID...
How do I access the command history from IDLE?
...ound under ~/.idlerc by default; look for the entry "history-previous" and set it to as below...
history-previous = <Key-Up>
Done.
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Increase distance between text and title on the y-axis
...ment_text() to change the distance between the axis title and the numbers. Set the values of the margin on top, right, bottom, and left side of the element.
ggplot(mpg, aes(cty, hwy)) + geom_point()+
theme(axis.title.y = element_text(margin = margin(t = 0, r = 20, b = 0, l = 0)))
margin can a...
What does auto&& tell us?
...ssible that it's moved-from, so it'd be incorrect use it further without resetting it.
Personally, I use auto&& in generic code when I need a modifyable variable. Perfect-forwarding an rvalue is modifying, since the move operation potentially steals its guts. If I just want to be lazy (i.e....
Process escape sequences in a string in Python
Sometimes when I get input from a file or the user, I get a string with escape sequences in it. I would like to process the escape sequences in the same way that Python processes escape sequences in string literals .
...
Split string with delimiters in C
How do I write a function to split and return an array for a string with delimiters in the C programming language?
20 Answe...
Moving UITabBarItem Image down?
...
Try adjusting tabBarItem's imageInsets (for moving the icon image) and setting the controllers title to nil (so no title is displayed). Put something like this to -init or -viewDidLoad method in view controller:
Objective-C
self.tabBarItem.imageInsets = UIE...
Python Logging (function name, file name, line number) using a single file
...ractive debugging prompt at any time by inserting the line import pdb; pdb.set_trace() in, and re-running your program. This enables you to step through the code, inspecting data as you choose.
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How to copy a dictionary and only edit the copy
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Python never implicitly copies objects. When you set dict2 = dict1, you are making them refer to the same exact dict object, so when you mutate it, all references to it keep referring to the object in its current state.
If you want to copy the dict (which is rare), you hav...
Does PHP have threading?
...r, any library that is thread safe is useable, as in any other thread safe setup of the interpreter.
pthreads utilizes Posix Threads ( even in Windows ), what the programmer creates are real threads of execution, but for those threads to be useful, they must be aware of PHP - able to execute user c...