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How to detect total available/free disk space on the iPhone/iPad device?
...pace {
uint64_t totalSpace = 0;
uint64_t totalFreeSpace = 0;
NSError *error = nil;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSDictionary *dictionary = [[NSFileManager defaultManager] attributesOfFileSystemForPath:[paths...
SQL error “ORA-01722: invalid number”
...
An ORA-01722 error occurs when an attempt is made to convert a character string into a number, and the string cannot be converted into a number.
Without seeing your table definition, it looks like you're trying to convert the numeric seq...
Is it safe to resolve a promise multiple times?
...eed a promise can be only resolved once, another tries will do nothing (no error, no warning, no then invocation).
I decided to work it around like this:
getUsers(users => showThem(users));
getUsers(callback){
callback(getCachedUsers())
api.getUsers().then(users => callback(users))
...
Have nginx access_log and error_log log to STDOUT and STDERR of master process
...
Edit: it seems nginx now supports error_log stderr; as mentioned in Anon's answer.
You can send the logs to /dev/stdout. In nginx.conf:
daemon off;
error_log /dev/stdout info;
http {
access_log /dev/stdout;
...
}
edit: May need to run ln -sf /proc/se...
How to find NSDocumentDirectory in Swift?
...it expects the type NSSearchPathDirectory instead. Certainly not a helpful error message.
But as to the reasons:
First, you are confusing the argument names and types. Take a look at the function definition:
func NSSearchPathForDirectoriesInDomains(
directory: NSSearchPathDirectory,
domai...
Getting an “ambiguous redirect” error
...n be pretty obtuse sometimes.
The following commands all return different error messages for basically the same error:
$ echo hello >
bash: syntax error near unexpected token `newline`
$ echo hello > ${NONEXISTENT}
bash: ${NONEXISTENT}: ambiguous redirect
$ echo hello > "${NONEXISTENT}"...
jQuery: Can I call delay() between addClass() and such?
...te a new queue item to do your removing of the class:
$("#div").addClass("error").delay(1000).queue(function(next){
$(this).removeClass("error");
next();
});
Or using the dequeue method:
$("#div").addClass("error").delay(1000).queue(function(){
$(this).removeClass("error").dequeue();...
What is “assert” in JavaScript?
...'re using some library that provides one. The usual meaning is to throw an error if the expression passed into the function is false; this is part of the general concept of assertion checking. Usually assertions (as they're called) are used only in "testing" or "debug" builds and stripped out of pro...
mongorestore error: Don't know what to do with the dump file [closed]
...owing path c:\hw1-1\dump (This contains the BSON files) I'm getting this error:
7 Answers
...
Eclipse compilation error: The hierarchy of the type 'Class name' is inconsistent
... software written in Java and tried to compile it using Eclipse.
I got the error: " The hierarchy of the type 'Class name' is inconsistent " in some files.
What causes these errors and how do I fix them?
...