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Modulo operation with negative numbers
In a C program i was trying the below operations(Just to check the behavior )
12 Answers
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Why should I use version control? [closed]
...ge to code, realised it was a mistake and wanted to revert back?
Lost code or had a backup that was too old?
Had to maintain multiple versions of a product?
Wanted to see the difference between two (or more) versions of your code?
Wanted to prove that a particular change broke or fixed a piece of co...
How do I download a tarball from GitHub using cURL?
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For https, you'll also likely need -k.
– nicerobot
Dec 29 '11 at 0:41
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How should one use std::optional?
...ood idea about what it does, but I don't understand when I should use it or how I should use it. The site doesn't contain any examples as of yet which leaves it harder for me to grasp the true concept of this object. When is std::optional a good choice to use, and how does it compensate for what...
BigDecimal - to use new or valueOf
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Those are two separate questions: "What should I use for BigDecimal?" and "What do I do in general?"
For BigDecimal: this is a bit tricky, because they don't do the same thing. BigDecimal.valueOf(double) will use the canonical String representation of the double value passed in...
java: Class.isInstance vs Class.isAssignableFrom
...be true whenever the class represented by the clazz object is a superclass or superinterface of Foo.
clazz.isInstance(obj) will be true whenever the object obj is an instance of the class clazz.
That is:
clazz.isAssignableFrom(obj.getClass()) == clazz.isInstance(obj)
is always true so long as ...
PHP validation/regex for URL
I've been looking for a simple regex for URLs, does anybody have one handy that works well? I didn't find one with the zend framework validation classes and have seen several implementations.
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Typing Enter/Return key using Python and Selenium?
I'm looking for a quick way to type and Enter or Return key in Selenium. Unfortunately the form I'm trying to test (not my own code so I can't modify) doesn't have a Submit button. When working with it manually, I just type ENTER or RETURN . I need to know how to do that with the Selenium type ...
Extract file basename without path and extension in bash [duplicate]
...cho "${s%.txt}"
foo
$ echo "${s%.*}"
foo
Note that this solution should work in all recent (post 2004) POSIX compliant shells, (e.g. bash, dash, ksh, etc.).
Source: Shell Command Language 2.6.2 Parameter Expansion
More on bash String Manipulations: http://tldp.org/LDP/LG/issue18/bash.html
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What is the difference between gravity and layout_gravity in Android?
...e View it's used on.
android:layout_gravity sets the gravity of the View or Layout relative to its parent.
And an example is here.
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