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How to track untracked content?
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You have added vendor/plugins/open_flash_chart_2 as “gitlink” entry, but never defined it as a submodule. Effectively you are using the internal feature that git submodule uses (gitlink entries) but you are not using the submodule feature itself.
You probably did something l...
What is the dependency inversion principle and why is it important?
What is the dependency inversion principle and why is it important?
16 Answers
16
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C# - What does the Assert() method do? Is it still useful?
I am debugging with breakpoints and I realize the assert call? I thought it was only for unit tests. What does it do more than breakpoint? Since I can breakpoint, why should I use Assert?
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When should one use final for method parameters and local variables?
...rameters and local variables, not final methods or classes. For constants, it makes obvious sense.
15 Answers
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How does a Java HashMap handle different objects with the same hash code?
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A hashmap works like this (this is a little bit simplified, but it illustrates the basic mechanism):
It has a number of "buckets" which it uses to store key-value pairs in. Each bucket has a unique number - that's what identifies the bucket. When you put a key-v...
What is the difference between ArrayList.clear() and ArrayList.removeAll()?
...code for clear():
public void clear() {
modCount++;
// Let gc do its work
for (int i = 0; i < size; i++)
elementData[i] = null;
size = 0;
}
The source code for removeAll()(As defined in AbstractCollection):
public boolean removeAll(Collection<?> c) {
boolea...
SQL Server Management Studio alternatives to browse/edit tables and run queries [closed]
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I've started using LinqPad. In addition to being more lightweight than SSMS, you can also practice writing LINQ queries- way more fun than boring old TSQL!
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Adding a directory to $LOAD_PATH (Ruby)
...TH (or $:). I see the advantages of doing this in case you're not working with a gem. One seems more verbose than the other, obviously, but is there a reason to go with one over the other?
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SET NOCOUNT ON usage
...ET NOCOUNT ON only saves 9-bytes per query while the text "SET NOCOUNT ON" itself is a whopping 14 bytes. I used to think that 123 row(s) affected was returned from server in plain text in a separate network packet but that's not the case. It's in fact a small structure called DONE_IN_PROC embedded ...
Creating a config file in PHP
...imple but elegant way is to create a config.php file (or whatever you call it) that just returns an array:
<?php
return array(
'host' => 'localhost',
'username' => 'root',
);
And then:
$configs = include('config.php');
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