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What is the difference between a var and val definition in Scala?
... didn't do anything to x")
else
println("f did something to x")
This becomes particularly important with multithreaded systems. In a multithreaded system, the following can happen:
x = new B(1)
f(x)
if (x.value.value == 1) {
print(x.value.value) // Can be different than 1!
}
If you use val ...
When should I use a NoSQL database instead of a relational database? Is it okay to use both on the s
...tional databases.
But, there are limitations on speed and scaling when it comes to massive high availability data stores. For example, Google and Amazon have terabytes of data stored in big data centers. Querying and inserting is not performant in these scenarios because of the blocking/schema/tra...
Found conflicts between different versions of the same dependent assembly that could not be resolved
...he message, which says:
C:\Program Files (x86)\MSBuild\12.0\bin\Microsoft.Common.CurrentVersion.targets(1697,5): warning MSB3277: Found conflicts between different versions of the same dependent assembly that could not be resolved. These reference conflicts are listed in the build log when log ver...
How to get relative path from absolute path
...String(relativeUri.ToString());
if (toUri.Scheme.Equals("file", StringComparison.InvariantCultureIgnoreCase))
{
relativePath = relativePath.Replace(Path.AltDirectorySeparatorChar, Path.DirectorySeparatorChar);
}
return relativePath;
}
...
Vertically align text to top within a UILabel
... [self.view addSubview:myLabel];
}
Some limitations of using sizeToFit come into play with center- or right-aligned text. Here's what happens:
// myLabel.textAlignment = NSTextAlignmentRight;
myLabel.textAlignment = NSTextAlignmentCenter;
[myLabel setNumberOfLines:0];
[myLabel ...
How to see query history in SQL Server Management Studio
...se use a server-side trace, not Profiler, for this).
As @Nenad-Zivkovic commented, it might be helpful to join on sys.dm_exec_query_stats and order by last_execution_time:
SELECT t.[text], s.last_execution_time
FROM sys.dm_exec_cached_plans AS p
INNER JOIN sys.dm_exec_query_stats AS s
ON p.pl...
How do you run your own code alongside Tkinter's event loop?
... it only runs when tkinter is not busy (which could cause problems in some complex programs). Best to stick with the threading module.
– Anonymous
Apr 26 '19 at 21:14
...
Aren't promises just callbacks?
...hemselves, they can just be chained without extra wrapping. That is, they compose.
– Dtipson
Dec 22 '15 at 19:11
...
Passing arguments to C# generic new() of templated type
...
added my code to another question stackoverflow.com/questions/1682310/…
– ChrisCa
Nov 5 '09 at 17:59
21
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What does the JSLint error 'body of a for in should be wrapped in an if statement' mean?
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