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Are lists thread-safe?
...s but keep the numbers big enough and run a few times and you will see the error
The FLAWED version
import threading
import time
# Change this number as you please, bigger numbers will get the error quickly
count = 1000
l = []
def add():
for i in range(count):
l.append(i)
tim...
Disable ActiveRecord for Rails 4
...guration from your config/environments files (this is what is causing your error)
This is all you need to do for an empty Rails app. If you run into problems caused by your existing code, stack trace should give you sufficient information on what you need to change. You might for example have some ...
What is the difference between return and return()?
...o these lines:
return 1;
var a = 1;
The reason return() throws a syntax error is for the exact reason the following line throws an error (return statement included for comparison):
return(); // SyntaxError: syntax error
var a = (); // SyntaxError: syntax error
...
While loop to test if a file exists in bash
...some time.
PS This also causes an annoying number of "Stale file handler" errors.
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iPhone OS: How do I create an NSDate for a specific date?
...TimeZone setDateFormat:@"MMM dd, yyyy"];
NSDate *theDate = nil;
NSError *error = nil;
if (![rfc3339TimestampFormatterWithTimeZone getObjectValue:&theDate forString:dateString range:nil error:&error]) {
NSLog(@"Date '%@' could not be parsed: %@", dateString, error);
}...
Visual Studio popup: “the operation could not be completed”
...his help.
In my experience sometime VS crash on start because there is an error in some source code, and due to that error VS can't compile the code, and then crash because without compiled code it's unable to show form in design mode.
In this case, deleting the .suo file will solve the situation b...
How do I use arrays in C++?
...ally everywhere. C++ provides abstractions that are easier to use and less error-prone ( std::vector<T> since C++98 and std::array<T, n> since C++11 ), so the need for arrays does not arise quite as often as it does in C. However, when you read legacy code or interact with a library ...
TypeScript function overloading
...ction and a number of declarations so that TypeScript doesn't give compile errors. When this code is compiled to JavaScript, the concrete function alone will be visible. As a JavaScript function can be called by passing multiple arguments, it just works.
...
Android Studio - Ambiguous method call getClass()
...d application.
My code works and compiles.
Recently, the IDE showes me error (red lines) on getClass of the following code:
...
WARNING: Can't verify CSRF token authenticity rails
I am sending data from view to controller with AJAXand I got this error:
17 Answers
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