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One line if statement not working
... value. There is no need for the conditional operator to even exist, let alone use it.
BTW: it is customary to name methods which are used to ask a question with a question mark at the end, like this:
@item.rigged?
This shows another problem with using the conditional operator in Ruby:
@item.ri...
`static` keyword inside function?
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Seems like nobody mentioned so far, that static variables inside different instances of the same class remain their state. So be careful when writing OOP code.
Consider this:
class Foo
{
public function call()
{
static $test = 0;
...
What are the implications of using “!important” in CSS? [duplicate]
...t's never okay to use though.
What's wrong with !important:
Specificity is one of the main forces at work when the browser decides how CSS affects the page. The more specific a selector is, the more importance is added to it. This usually coincides with how often the selected element occurs. For exa...
How to recognize swipe in all 4 directions
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You need to have one UISwipeGestureRecognizer for each direction. It's a little weird because the UISwipeGestureRecognizer.direction property is an options-style bit mask, but each recognizer can only handle one direction. You can send them a...
What's the difference between array_merge and array + array?
...r beginners here, the result of the operation in both cases is null if any one of the arrays is null. Some might not care about this assuming since it is a union operation, the result will be the proper (not-null) array if one of them is null. But, that holds true if one of the arrays is an empty ar...
Disadvantages of Test Driven Development? [closed]
... changed, tweaked or fine tuned, this can cause a big time investment that one might claim is not justified. So use it when you think it actually fits the system and don't force the design to fit to TDD.
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Where should @Service annotation be kept? Interface or Implementation?
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I never put @Component (or @Service, ...) at an interface, because this make the interface useless. Let me explain why.
claim 1: If you have an interface then you want to use that interface for the injection point type.
claim 2: The purpose...
How do you rename a Git tag?
... if tag is annotated the new tag won't have the message of the old one, but it's a helpful info
– NickSoft
May 26 '11 at 15:34
...
What is the difference between IEqualityComparer and IEquatable?
...eciding whether to use IEquatable<T> or IEqualityComparer<T>,
one could ask:
Is there a preferred way of testing two instances of T for equality, or are there several equally valid ways?
If there is only one way of testing two instances of T for equality, or if one of several met...
SQL update from one Table to another based on a ID match
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The simple Way to copy the content from one table to other is as follow:
UPDATE table2
SET table2.col1 = table1.col1,
table2.col2 = table1.col2,
...
FROM table1, table2
WHERE table1.memberid = table2.memberid
You can also add the condition to get the particul...