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Is there hard evidence of the ROI of unit testing?
...mmers and, more importantly, the bean-counters in management, that all the extra time spent learning the testing framework, writing tests, keeping them updated, etc.. will pay for itself, and then some.
...
How do I limit the number of returned items?
...ction takes are as follows:
conditions «Object».
[projection] «Object|String» optional fields to return, see Query.prototype.select()
[options] «Object» optional see Query.prototype.setOptions()
[callback] «Function»
How to limit
const Post = require('./models/Post');
Post.find(
{ pu...
What is the best scripting language to embed in a C# desktop application? [closed]
...space ScriptingInterface
{
public interface IScriptType1
{
string RunScript(int value);
}
}
namespace ScriptingExample
{
static class Program
{
///
/// The main entry point for the application.
///
[STAThread]
static void Main()
...
Checkout another branch when there are uncommitted changes on the current branch
...ash ID of each file. So Git can compare hash IDs—currently 160-bit-long strings—to decide if commits X and Y have the same file or not. It can then compare those hash IDs to the hash ID in the index, too.
This is what leads to all the oddball corner cases above. We have commits X and Y that ...
Flex-box: Align last row to grid
...
One technique would be inserting a number of extra elements (as many as the max number of elements you ever expect to have in a row) that are given zero height. Space is still divided, but superfluous rows collapse to nothing:
http://codepen.io/dalgard/pen/Dbnus
b...
Best way to select random rows PostgreSQL
... @Awesome-o: The goal is to retrieve 1000 rows, I start with an extra 10 % to compensate for a few gaps or (unlikely but possible) duplicate random numbers ... the explanation is in my answer.
– Erwin Brandstetter
Feb 24 '14 at 12:53
...
Setting an object to null vs Dispose()
...ode) to know when you're not going to use a reference again. For example:
StringBuilder sb = new StringBuilder();
sb.Append("Foo");
string x = sb.ToString();
// The string and StringBuilder are already eligible
// for garbage collection here!
int y = 10;
DoSomething(y);
// These aren't helping at...
Python import csv to list
... This does not work in Python 3.x : "csv.Error: iterator should return strings, not bytes (did you open the file in text mode?)" See below for the answer that works in Python 3.x
– Gilbert
May 30 '16 at 18:12
...
What is the memory consumption of an object in Java?
...uld I use a 32- or a 64-bit JVM?, 2012, JDK 1.7)
Boxed types, arrays, and strings
Boxed wrappers have overhead compared to primitive types (from JavaWorld):
Integer: The 16-byte result is a little worse than I expected because an int value can fit into just 4 extra bytes. Using an Integer c...
Suppress Scientific Notation in Numpy When Creating Array From Nested List
...r 1D and 2D arrays you can use np.savetxt to print using a specific format string:
>>> import sys
>>> x = numpy.arange(20).reshape((4,5))
>>> numpy.savetxt(sys.stdout, x, '%5.2f')
0.00 1.00 2.00 3.00 4.00
5.00 6.00 7.00 8.00 9.00
10.00 11.00 12.00 13.00 14.00
15...