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How do you use NSAttributedString?
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ActiveRecord: size vs count
...rds using both Model.size and Model.count . If you're dealing with more complex queries is there any advantage to using one method over the other? How are they different?
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PDO MySQL: Use PDO::ATTR_EMULATE_PREPARES or not?
... for multiple queries your overall execution may be slower.
As a final recommendation, I think with older versions of MySQL+PHP, you should emulate prepared statements, but with your very recent versions you should turn emulation off.
After writing a few apps that use PDO, I've made a PDO connect...
How to implement the factory method pattern in C++ correctly
There's this one thing in C++ which has been making me feel uncomfortable for quite a long time, because I honestly don't know how to do it, even though it sounds simple:
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How to send data to local clipboard from a remote SSH session
...local clipboard, using only the keyboard.
The essence of the solution:
commandThatMakesOutput | ssh desktop pbcopy
When run in an ssh session to a remote computer, this command takes the output of commandThatMakesOutput (e.g. ls, pwd) and pipes the output to the clipboard of the local computer...
What is the difference between statically typed and dynamically typed languages?
...ages
A language is statically typed if the type of a variable is known at compile time. For some languages this means that you as the programmer must specify what type each variable is (e.g.: Java, C, C++); other languages offer some form of type inference, the capability of the type system to dedu...
What is the difference between JDK and JRE?
...Java Runtime Environment. It is a package of everything necessary to run a compiled Java program, including the Java Virtual Machine (JVM), the Java Class Library, the java command, and other infrastructure. However, it cannot be used to create new programs.
The JDK is the Java Development Kit, the...
Converting JSON String to Dictionary Not List
...ting list slice. What you need to use to get the result you want is a list comprehension:
[p[0] for p in datapoints[0:5]]
Here's a simple way to calculate the mean:
sum(p[0] for p in datapoints[0:5])/5. # Result is 35.8
If you're willing to install NumPy, then it's even easier:
import numpy
j...
Thread pooling in C++11
...hese code and and I have a bad memory. Sorry that I cannot provide you the complete thread pool code, that would violate my job integrity.
Edit: to terminate the pool, call the shutdown() method:
XXXX::shutdown(){
{
unique_lock<mutex> lock(threadpool_mutex);
terminate_pool = true;} /...
Spring Boot application as a Service
...ion packaged as executable jar as a Service in the Linux system? Is this recommended approach, or should I convert this app to war and install it into Tomcat?
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