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How do I syntax check a Bash script without running it?
... to add to the (for me) non obvious caveat, it also won't catch an error caused by a missing space if ["$var" == "string" ] instead of if [ "$var" == "string" ]
– Brynjar
Aug 5 '11 at 16:13
...
Begin, Rescue and Ensure in Ruby?
...he exception class, in which case all exceptions that inherit from StandardError will be caught. (Please note that this does not mean that all exceptions are caught, because there are exceptions which are instances of Exception but not StandardError. Mostly very severe exceptions that compromise the...
How to print to console when using Qt
...ng( "C Style Warning Message" );
qCritical() << "C++ Style Critical Error Message";
qCritical( "C Style Critical Error Message" );
// qFatal does not have a C++ style method.
qFatal( "C Style Fatal Error Message" );
Though as pointed out in the comments, bear in mind qDebug messages are re...
Unresolved external symbol in object files
During coding in Visual Studio I got an unresolved external symbol error
and I've got no idea what to do. I don't know what's wrong.
Could you please decipher me? Where should I be looking for what kind of errors?
...
fatal: could not read Username for 'https://github.com': No such file or directory
... I followed it up with Jefferson Silva's and it worked well. Still have an error: cannot spawn sh: No such file or directory message...
– TheSciGuy
May 13 '19 at 14:56
add a c...
'printf' vs. 'cout' in C++
...iceable when you print many arguments. If you have to write something like Error 2: File not found., assuming error number, and its description is placeholder, the code would look like this. Both examples work identically (well, sort of, std::endl actually flushes the buffer).
printf("Error %d: %s....
Which is preferred: Nullable.HasValue or Nullable != null?
...uming SomeNullable is an int?).
While SomeNullable.Value gets us a runtime error if we assigned null to SomeNullable. This is in fact the only case where nullables could cause us a problem, thanks to a combination of overloaded operators, overloaded object.Equals(obj) method, and compiler optimizati...
Inputting a default image in case the src attribute of an html is not valid?
...e. Maybe you wanna use JQuery to hook the event.
<img src="foo.jpg" onerror="if (this.src != 'error.jpg') this.src = 'error.jpg';">
Updated with jacquargs error guard
Updated: CSS only solution
I recently saw Vitaly Friedman demo a great CSS solution I wasn't aware of. The idea is to appl...
C# How can I check if a URL exists/is valid?
...om/silly");
}
You would try/catch around the DownloadString to check for errors; no error? It exists...
With C# 2.0 (VS2005):
private bool headOnly;
public bool HeadOnly {
get {return headOnly;}
set {headOnly = value;}
}
and
using(WebClient client = new MyClient())
{
// code as ...
“date(): It is not safe to rely on the system's timezone settings…”
I got this error when I requested to update the PHP version from 5.2.17 to PHP 5.3.21 on the server.
24 Answers
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