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Detecting when the 'back' button is pressed on a navbar
...desBackButton(true, animated: false)
self.backButton = UIBarButtonItem(title: "Back", style: UIBarButtonItemStyle.Plain, target: self, action: "goBack")
self.navigationItem.leftBarButtonItem = backButton
}
// Then handle the button selection
func goBack() {
// Here we just remove the ba...
How to get the IP address of the docker host from inside a docker container
As the title says. I need to be able to retrieve the IP address the docker hosts and the portmaps from the host to the container, and doing that inside of the container.
...
Find the files existing in one directory but not in the other [closed]
...uce unnecessarily long output for large directories, I wrote my own Python script to compare two folders.
Unlike many other solutions, it doesn't compare contents of the files. Also it doesn't go inside subdirectories which are missing in another directory. So the output is quite concise and the sc...
cv2.imshow command doesn't work properly in opencv-python
...ythonw.exe is not responding
"Basically, don't do this from IDLE. Write a script and run it from the shell or the script directly if in windows, by naming it with a .pyw extension and double clicking it. There is apparently a conflict between IDLE's own event loop and the ones from GUI toolkits."
...
How to calculate the SVG Path for an arc (of a circle)
...Note that the arcSweep variable is actually controlling the large-arc-flag svg A parameter. In the above code, the value for the sweep-flag parameter is always zero. arcSweep should probably be renamed to something like longArc.
– Steven Grosmark
Jan 9 '16 at...
Why should I use Google's CDN for jQuery?
...ther decreasing the latency.)
(Optional) They will automatically keep your scripts up to date. (If you like to "fly by the seat of your pants," you can always use the latest version of any script that they offer. These could fix security holes, but generally just break your stuff.)
...
How can you program if you're blind?
...rsion used at my internship and is very accessible using Jaws and a set of scripts that were developed to make things such as the form designer more accessible.
For C and C++ programming I use cygwin with gcc as my compiler and emacs or vim as my editor depending on what I need to do. A lot of my ...
Read an Excel file directly from a R script
...gument
read_excel("my-spreadsheet.xls", na = "NA")
Note that while the description says 'no external dependencies', it does require the Rcpp package, which in turn requires Rtools (for Windows) or Xcode (for OSX), which are dependencies external to R. Though many people have them installed for oth...
Best way to store time (hh:mm) in a database
...e expense of losing information.
A rule of thumb with databases is as the title says, a database can only tell you as much as it has data for, and it can be very costly to go back through historical data, filling in gaps.
The solution is to get it correct first time. This is certainly easier said ...
Returning 'IList' vs 'ICollection' vs 'Collection'
...ven't read it before, Brad Abrams and Krzysztof Cwalina wrote a great book titled "Framework Design Guidelines: Conventions, Idioms, and Patterns for Reusable .NET Libraries" (you can download a digest from here).
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