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What code analysis tools do you use for your Java projects? [closed]
...n rewrite them. Some of these tools come with applications or "hooks" that allow them to be extended. For example, PMD comes with the "designer" tool that allows you to create new rules. Also, Checkstyle has the DescendantToken check that has properties that allow for substantial customization.
I i...
What is the difference between properties and attributes in HTML?
...attribute. Instead, it's the current value of the input. When the user manually changes the value of the input box, the value property will reflect this change. So if the user inputs "John" into the input box, then:
theInput.value // returns "John"
whereas:
theInput.getAttribute('value') // retu...
Xcode variables
...mmand for the shell you're using) and build your project. This will output all of the environment variables that are available to you. You can use this in conjunction with the documentation to make sure you're getting the data that you expected.
– Ryan H.
Mar 9...
How to reorder data.table columns (without copying)
... 2 2
# [3,] 0.3297416 1 3
From ?setcolorder:
In data.table parlance, all set* functions change their input by reference. That is, no copy is made at all, other than temporary working memory, which is as large as one column.
so should be pretty efficient. See ?setcolorder for details.
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Safe String to BigDecimal conversion
...0,000,000.999999999999999";
BigDecimal money = new BigDecimal(value.replaceAll(",", ""));
System.out.println(money);
Full code to prove that no NumberFormatException is thrown:
import java.math.BigDecimal;
public class Tester {
public static void main(String[] args) {
// TODO Auto-...
What are the differences between 'call-template' and 'apply-templates' in XSL?
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<xsl:call-template> is a close equivalent to calling a function in a traditional programming language.
You can define functions in XSLT, like this simple one that outputs a string.
<xsl:template name="dosomething">
&l...
Why NSUserDefaults failed to save NSMutableDictionary in iOS?
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When do I need to release the loaded object? No alloc was called, so I would assume it is autorelased?
– Marc
Apr 16 '12 at 13:08
7
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Good reasons NOT to use a relational database?
...l system)
Very good support for versioning of data
Berkeley DB (Basically, a disk based hashtable)
Very simple conceptually (just un-typed key/value)
Quite fast
No administration overhead
Supports transactions I believe
Amazon's Simple DB
Much like Berkeley DB I believe, but hosted
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Easy way of running the same junit test over and over?
...for some simple way to run JUnit 4.x tests several times in a row automatically using Eclipse.
12 Answers
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How big can a user agent string get?
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HTTP specification does not limit length of headers at all.
However web-servers do limit header size they accept, throwing 413 Entity Too Large if it exceeds.
Depending on web-server and their settings these limits vary from 4KB to 64KB (total for all headers).
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