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How do I get the MAX row with a GROUP BY in LINQ query?
... {
var q = from t in dc.TableTests
group t by t.SerialNumber
into g
select new
{
SerialNumber = g.Key,
uid = (from t2 in g select t2.uid).Ma...
How to run code when a class is subclassed? [duplicate]
...
Classes (by default) are instances of type.
Just as an instance of a class Foo is created by foo = Foo(...),
an instance of type (i.e. a class) is created by myclass = type(name, bases, clsdict).
If you want something special to happ...
How to find elements by class
...wered Feb 18 '11 at 12:04
Klaus Byskov PedersenKlaus Byskov Pedersen
99.3k2424 gold badges174174 silver badges218218 bronze badges
...
Environment variables in Mac OS X
...
There's no need for duplication. You can set environment variables used by launchd (and child processes, i.e. anything you start from Spotlight) using launchctl setenv.
For example, if you want to mirror your current path in launchd after setting it up in .bashrc or wherever:
PATH=whatever:you:...
What is the garbage collector in Java?
...he Java Virtual Machine which gets rid of objects which are not being used by a Java application anymore. It is a form of automatic memory management.
When a typical Java application is running, it is creating new objects, such as Strings and Files, but after a certain time, those objects are not u...
Rails server says port already used, how to kill that process?
...
You can also find the PID by navigating through your rails directory to the following file tmp/pids/server.pid
– tandy
Feb 15 '14 at 19:29
...
Java HTTPS client certificate authentication
...file containing
The client's public certificate (in this instance signed by a self-signed CA)
The client's private key
To generate it I used OpenSSL's pkcs12 command, for example;
openssl pkcs12 -export -in client.crt -inkey client.key -out client.p12 -name "Whatever"
Tip: make sure you get t...
Multiple commands in gdb separated by some sort of delimiter ';'?
...en printed a backtrace, but it doesn't.
You can accomplish the same thing by calling into the Python interpreter.
python import gdb ; print(gdb.execute("s")) ; print(gdb.execute("bt"))
It's possible to wrap this up into a dedicated command, here called "cmds", backed by a python definition.
Here...
What's the _ underscore representative of in Swift References?
...
Swift gives the first parameter name in a method a local parameter name by default, and gives the second and subsequent parameter names both local and external parameter names by default.
On the other hand, functions by default don't have external parameter names.
For example, we have this foo...
Linux command to translate DomainName to IP [closed]
...ckoverflow.com has address 69.59.196.211
stackoverflow.com mail is handled by 30 alt2.aspmx.l.google.com.
stackoverflow.com mail is handled by 40 aspmx2.googlemail.com.
stackoverflow.com mail is handled by 50 aspmx3.googlemail.com.
stackoverflow.com mail is handled by 10 aspmx.l.google.com.
stackove...