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Do you use NULL or 0 (zero) for pointers in C++?
In the early days of C++ when it was bolted on top of C, you could not use NULL as it was defined as (void*)0 . You could not assign NULL to any pointer other than void* , which made it kind of useless. Back in those days, it was accepted that you used 0 (zero) for null pointers.
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Compare dates in MySQL
...ECT *
FROM players
WHERE us_reg_date >= '2000-07-05'
AND us_reg_date < '2011-11-10' + interval 1 day
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Filter data.frame rows by a logical condition
I want to filter rows from a data.frame based on a logical condition. Let's suppose that I have data frame like
9 Answers...
What are 'get' and 'set' in Swift?
...hat are stored, properties can have a getter and a setter.
class EquilateralTriangle: NamedShape {
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When some other class wants to get that perimeter variable, they do this:
let someVar = myTriangle.perimeter
... Which calls this:
get{
return 3.0 * self.sideLength
}
And thus it's ess...
How to format a UTC date as a `YYYY-MM-DD hh:mm:ss` string using NodeJS?
...8601 is necessarily UTC (also indicated by the trailing Z on the first result), so you get UTC by default (always a good thing).
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What is the difference between the | and || or operators?
...similar problems. For example:
if(class != null && class.someVar < 20)
If class is null, the if-statement will stop after class != null is false. If you only use &, it will try to check class.someVar and you get a nice NullReferenceException. With the Or-Operator that may not be th...
Understanding garbage collection in .NET
...aware of there being a debugger attached. It then modifies the table and alters the "last used" address. And changes it from its normal value to the address of the last instruction in the method. Which keeps the variable alive as long as the method hasn't returned. Which allows you to keep watch...
uppercase first character in a variable with bash
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foo="$(tr '[:lower:]' '[:upper:]' <<< ${foo:0:1})${foo:1}"
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How to remove css property in jQuery
...orked for me is to use removeClass() to remove the class from the element altogether.
– clayRay
Aug 26 at 2:18
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How can I remove time from date with Moment.js?
...as commented by 'collin', you have to be careful when saving date. Better alternative is using format('LL'), as have been answered in this thread.
– Sudarshan_SMD
Dec 13 '16 at 7:18
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