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What are Runtime.getRuntime().totalMemory() and freeMemory()?
...he Java virtual machine will attempt to use. If there is no inherent limit then the value Long.MAX_VALUE will be returned.
freeMemory()
Returns the amount of free memory in the Java Virtual Machine. Calling the gc method may result in increasing the value returned by freeMemory.
In reference to ...
What is the use for Task.FromResult in C#
... enough to optimize this away, and doesn't actually spawn a new thread and then kill it right away!
– John Henckel
Jan 29 '15 at 17:18
14
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Determine the type of an object?
...s, so it’s possible to check for multiple types at once. isinstance will then return true, if the object is of any of those types:
>>> isinstance([], (tuple, list, set))
True
share
|
im...
How can I output a UTF-8 CSV in PHP that Excel will read properly?
...ound that things came out garbled if I started the string as just the BOM, then on another line added the "sep=,\n", then on another line added the data. Things were fine if I did it all in one line ($csv = chr(255) . chr(254) /* BOM */ . "sep=,\n" . mb_convert_encoding($csv, 'UTF-16LE', 'UTF-8');)....
How to print a query string with parameter values when using Hibernate
...LROLLINGFILE" />
</logger>
The output in your sql.log (example) then looks like this:
2013-08-30 18:01:15,083 | update stepprovider set created_at=?, lastupdated_at=?, version=?, bundlelocation=?, category_id=?, customer_id=?, description=?, icon_file_id=?, name=?, shareStatus=?, spversi...
PHP foreach change original array values
... Bottom line: if you're going to change the array/variable - then you should use a reference. It's faster, cleaner and more readable.
– Lulu
Feb 10 '16 at 8:26
2
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Eager load polymorphic
... shop
return unless reviewable_type == "Shop"
super
end
end
Then you can query like this:
Review.includes(:shop).where(shops: {shop_type: 'cafe'})
Notice that the table name is shops and not reviewable. There should not be a table called reviewable in the database.
I believe this...
How to change webservice url endpoint?
...ut if you debug you should see the call into the javax Provider class, and then see it try to create the endpoint with your new wsdl location (assuming you are using JAX-WS 2.0+). Then inside your service, the getPort call should call super.getPort, which uses has your new port set in a serviceDeleg...
Mapping composite keys using EF code first
...int fk_one,
int fk_two
}
Model2
{
int pk_one,
int pk_two,
}
then in the context config
public class MyContext : DbContext
{
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Entity<Model1>()
.HasRequired(e => e.Mo...
Calling shell functions with xargs
...nis' solution does is export the function for child bash processes to use, then forks to the subprocess and executes there.
– David Souther
Jun 12 '12 at 19:39
7
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