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When to use @QueryParam vs @PathParam
...with algorithm. For example the google engine use query strings:
http:// www.google.com/search?q=rest
To sum up, there's not any strong reason to use one of this methods but whenever you can, use URI variables.
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Meaning of epsilon argument of assertEquals for double values
...nal double DELTA = 1e-15;
@Test
public void testDelta(){
assertEquals(123.456, 123.456, DELTA);
}
If you're using hamcrest assertions, you can just use the standard equalTo() with two doubles (it doesn't use a delta). However if you want a delta, you can just use closeTo() (see javadoc), e.g....
Truncate number to two decimal places without rounding
...2.55
2.99999 => 2.99
4.27 => 4.27
15.7784514 => 15.77
123.5999 => 123.59
0.000000199 => 1.99 *
* As mentioned in the note, that's due to javascript implicit conversion into exponential for "1.99e-7"
And for some other values of n:
15.001097 => 15.0010 (n=4)
0.00...
How do I return to an older version of our code in Subversion?
...nd the right revision number.
Note down the good revision number (assuming 123 for examples below).
Update to the latest revision:
svn update
Undo all the changes between the revision you want and the latest version:
svn merge -r HEAD:123 .
svn commit "Reverted to revision 123"
(the same as Jon...
A numeric string as array key in PHP
Is it possible to use a numeric string like "123" as a key in a PHP array, without it being converted to an integer?
11 A...
What does -> mean in Python function definitions?
...cs.python.org/3/reference/compound_stmts.html#function-definitions
https://www.python.org/dev/peps/pep-3107/
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Asserting successive calls to a mock method
...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...
TCP 的那些事儿（上） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...Sequence Number
下图是我从Wireshark中截了个我在访问coolshell.cn时的有数据传输的图给你看一下，SeqNum是怎么变的。（使用Wireshark菜单中的Statistics ->Flow Graph… ）
你可以看到，SeqNum的增加是和传输的字节数相关的。上图中，...
In Java, when should I create a checked exception, and when should it be a runtime exception? [dupli
...
Fundamentally the only difference between checked exceptions and unchecked exceptions is that the compiler forces you to document checked exceptions. You should be documenting any exceptions your code can throw anyway; I can...
How can I print the contents of a hash in Perl?
...
Data::Dumper is your friend.
use Data::Dumper;
my %hash = ('abc' => 123, 'def' => [4,5,6]);
print Dumper(\%hash);
will output
$VAR1 = {
'def' => [
4,
5,
6
],
'abc' => 123
...