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Using the “final” modifier whenever applicable in Java [closed]
...sibilities that you (or the next programmer, working on your code) will misinterpret or misuse the thought process which resulted in your code. At least it should ring some bells when they now want to change your previously immutable thing.
At first, it kind of looks awkward to see a lot of final k...
How to make ThreadPoolExecutor's submit() method block if it is saturated?
...vate final Semaphore semaphore;
public BoundedExecutor(Executor exec, int bound) {
this.exec = exec;
this.semaphore = new Semaphore(bound);
}
public void submitTask(final Runnable command)
throws InterruptedException, RejectedExecutionException {
sem...
What does “hashable” mean in Python?
I tried searching internet but could not find the meaning of hashable.
9 Answers
9
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LaTeX: Prevent line break in a span of text
...at the point of the command. With the
optional argument, number, you can convert the \nolinebreak command
from a demand to a request. The number must be a number from 0 to 4.
The higher the number, the more insistent the request is.
Source: http://www.personal.ceu.hu/tex/breaking.htm#nolineb...
SQL WHERE.. IN clause multiple columns
...
While this would work, it converts the uncorrelated query in the question into a correlated query. Unless the query optimizer is clever, this might give you O(n^2) performance :-(. But maybe I'm underestimating the optimizer...
–...
Using Rails serialize to save hash to database
...
add_column :users, :multi_wrong, :text
end
Then Rails will properly convert it into YAML for you (and perform proper serialization). Strings fields are limited in size and will only hold especially-small values.
share...
Is it possible to make an ASP.NET MVC route based on a subdomain?
... string host = httpContext.Request.Headers["Host"];
int index = host.IndexOf('.');
if (index >= 0)
subdomain = host.Substring(0, index);
}
if (subdomain != null)
routeData.Values["subdomain"] = subdomain;
retur...
How do I check if a given string is a legal/valid file name under Windows?
...
2nd piece of code doesn't compile. "Cannot convert from char[] to string
– Paul Hunt
Apr 25 '14 at 12:03
1
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What does the [Flags] Enum Attribute mean in C#?
...
That's what I mean, I prefer to have the full int in source code. If I have a column on a table in the database called MyEnum that stores a value of one of the enums, and a record has 131,072, I would need to get out my calculator to figure out that that corresponds to t...
How to initialize HashSet values by construction?
...;
Again, this is not time efficient since you are constructing an array, converting to a list and using that list to create a set.
When initializing static final sets I usually write it like this:
public static final String[] SET_VALUES = new String[] { "a", "b" };
public static final Set<Str...