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What is a “first chance exception”?
...ception? How and where does it originate in a .NET program? And why is it called by that peculiar name (what 'chance' are we talking about)?
...
What is ?= in Makefile
...ariable only if it's not set/doesn't have a value.
For example:
KDIR ?= "foo"
KDIR ?= "bar"
test:
echo $(KDIR)
Would print "foo"
GNU manual: http://www.gnu.org/software/make/manual/html_node/Setting.html
share
...
What is Mocking?
... a "minimal" simulated object. The stub implements just enough behavior to allow the object under test to execute the test.
A mock is like a stub but the test will also verify that the object under test calls the mock as expected. Part of the test is verifying that the mock was used correctly.
To gi...
Meaning of epsilon argument of assertEquals for double values
...ith asserting exact floating point values. For instance:
public interface Foo {
double getDefaultValue();
}
public class FooImpl implements Foo {
public double getDefaultValue() { return Double.MIN_VALUE; }
}
In this case, you want to make sure it's really MIN_VALUE, not zero or -MIN_VAL...
In what cases could `git pull` be harmful?
... have to get into the habit of typing:
git pull --ff-only
However, with all versions of Git, I recommend configuring a git up alias like this:
git config --global alias.up '!git remote update -p; git merge --ff-only @{u}'
and using git up instead of git pull. I prefer this alias over git pull...
Java: is there a map function?
...
@jameshfisher, yes, something like foo::doMap or Foo::doMap.
– leventov
Aug 27 '14 at 6:26
9
...
How to print Unicode character in Python?
...ream redirection.
Store unicode characters in a file:
Save this to file: foo.py:
#!/usr/bin/python -tt
# -*- coding: utf-8 -*-
import codecs
import sys
UTF8Writer = codecs.getwriter('utf8')
sys.stdout = UTF8Writer(sys.stdout)
print(u'e with obfuscation: é')
Run it and pipe output to file:
py...
Strings are objects in Java, so why don't we use 'new' to create them?
... reference will point to the canonical String instance.
String a = "foo";
String b = "foo";
System.out.println(a == b); // true
String c = new String(a
Literal notation for Dictionary in C#?
...gt; object first as the shortcut syntax is translated to a bunch of Add() calls (like your code):
var data = new Dictionary<string, string>
{
{ "test", "val" },
{ "test2", "val2" }
};
In C# 6, you now have the option of using a more intuitive syntax with Dictionary as well as any o...
public friend swap member function
...truct vector
{
void swap(vector&) { /* swap members */ }
};
Naturally, then, our class should too, right? Well, not really. The standard library has all sorts of unnecessary things, and a member swap is one of them. Why? Let's go on.
What we should do is identify what's canonical, and w...