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Are arrays in PHP copied as value or as reference to new variables, and when passed to functions?
1) When an array is passed as an argum>me m>nt to a m>me m>thod or function, is it passed by reference, or by value?
8 Answers
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How to return multiple lines JSX in another return statem>me m>nt in React?
... to think of the tags as function calls (see docs). Then the first one becom>me m>s:
{[1,2,3].map(function (n) {
return React.DOM.p(...);
})}
And the second one:
{[1,2,3].map(function (n) {
return (
React.DOM.h3(...)
React.DOM.p(...)
)
})}
It should now be clear that the second snippe...
Serializing class instance to JSON
...olution would be to make your class inherit from JSONEncoder and then implem>me m>nt the JSONEncoder.default() function, and make that function emit the correct JSON for your class.
A simple solution would be to call json.dumps() on the .__dict__ m>me m>mber of that instance. That is a standard Python dict ...
How do we determine the number of days for a given month in python [duplicate]
...th in python. If a user inputs Feb 2011 the program should be able to tell m>me m> that Feb 2011 has 28 days. Could any one tell m>me m> which library I should use to determine the length of a given month.
...
Stored procedure slow when called from web, fast from Managem>me m>nt Studio
I have stored procedure that insanely tim>me m>s out every single tim>me m> it's called from the web application.
7 Answers
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What did MongoDB not being ACID compliant before v4 really m>me m>an?
...tabase expert and have no formal computer science background, so bear with m>me m>. I want to know the kinds of real world negative things that can happen if you use an old MongoDB version prior to v4 , which were not ACID compliant. This applies to any ACID noncompliant database.
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Why there is no ForEach extension m>me m>thod on IEnum>me m>rable?
...
There is already a foreach statem>me m>nt included in the language that does the job most of the tim>me m>.
I'd hate to see the following:
list.ForEach( item =>
{
item.DoSom>me m>thing();
} );
Instead of:
foreach(Item item in list)
{
item.DoSom>me m>thing();
}...
What is the most effective way to get the index of an iterator of an std::vector?
...uld be to keep the index as a second loop counter.
Note: it is a common nam>me m> for a container iterator,std::container_type::iterator it;.
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How to manually set an authenticated user in Spring Security / SpringMVC
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I had the sam>me m> problem as you a while back. I can't rem>me m>mber the details but the following code got things working for m>me m>. This code is used within a Spring Webflow flow, hence the RequestContext and ExternalContext classes. But the part...
How do I create an array of strings in C?
... want to be able to change the actual string content, the you have to do som>me m>thing like
char a[2][14];
strcpy(a[0], "blah");
strcpy(a[1], "hmm");
This will allocate two consecutive arrays of 14 chars each, after which the content of the static strings will be copied into them.
...