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How can I safely create a nested directory?
...path.exists and the os.makedirs calls, the os.makedirs will fail with an OSError. Unfortunately, blanket-catching OSError and continuing is not foolproof, as it will ignore a failure to create the directory due to other factors, such as insufficient permissions, full disk, etc.
One option would be ...
How do I integrate Ajax with Django applications?
... alert(data);
},
failure: function(data) {
alert('Got an error dude');
}
});
The general process is this:
The call goes to the URL 127.0.0.1:8000/hello as if you opened a new tab and did it yourself.
If it succeeds (status code 200), do the function for success, which will...
Truncate all tables in a MySQL database in one command?
...e Query Result to truncate tables
Note:
may be you will get this error:
ERROR 1217 (23000): Cannot delete or update a parent row: a foreign key constraint fails
That happens if there are tables with foreign keys references to the table you are trying to drop/truncate.
Before truncating...
Why are preprocessor macros evil and what are the alternatives?
...o replacements where you didn't want it, and this usually leads to strange error messages.
Macros may affect things you don't realize.
So let's expand a little here:
1) Macros can't be debugged.
When you have a macro that translates to a number or a string, the source code will have the macro ...
Regular cast vs. static_cast vs. dynamic_cast [duplicate]
... while the "equivalent" static_cast sequence would give you a compile-time error for that.
Some people prefer C-style casts because of their brevity. I use them for numeric casts only, and use the appropriate C++ casts when user defined types are involved, as they provide stricter checking.
...
.gitignore and “The following untracked working tree files would be overwritten by checkout”
... I think the first part is for the reverse of this particular error message. This error is stating the user is currently in a branch that doesn't have those JPG files tracked and the user is trying to move to one that does. So doing git rm --cached will not make a difference, those file...
How do I return NotFound() IHttpActionResult with an error message or exception?
... different. Here's how you might do it in your case (assuming you want the error message in text/plain; if you want JSON, you'd do something slightly different with the content):
public class NotFoundTextPlainActionResult : IHttpActionResult
{
public NotFoundTextPlainActionResult(string message...
ProcessBuilder: Forwarding stdout and stderr of started processes without blocking the main thread
... so called StreamGobbler (which you are started to create):
StreamGobbler errorGobbler = new StreamGobbler(p.getErrorStream(), "ERROR");
// any output?
StreamGobbler outputGobbler = new StreamGobbler(p.getInputStream(), "OUTPUT");
// start gobblers
outputGobbler.start();
errorGobbler.start();
....
JavaScript: Upload file
...
<br><br>
(in stack overflow snippets there is problem with error handling, however in <a href="https://jsfiddle.net/Lamik/b8ed5x3y/5/">jsfiddle version</a> for 404 errors 4xx/5xx are <a href="https://stackoverflow.com/a/33355142/860099">not throwing</a> at all...
What is a thread exit code?
...itCodeThread
Important The GetExitCodeThread function returns a valid error code defined by the application only after the thread terminates. Therefore, an application should not use STILL_ACTIVE (259) as an error code. If a thread returns STILL_ACTIVE (259) as an error code, applications that ...