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In Mongoose, how do I sort by date? (node.js)
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You can also sort by the _id field. For example, to get the most recent record, you can do: await db.collection.findOne().sort({ _id: -1 });
– Mike K
Feb 8 at 11:00
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Why aren't pointers initialized with NULL by default?
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We all realize that pointer (and other POD types) should be initialized.
The question then becomes 'who should initialize them'.
Well there are basically two methods:
The compiler initializes them.
The developer initializes...
JavaScript variable number of arguments to function
Is there a way to allow "unlimited" vars for a function in JavaScript?
11 Answers
11
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Serializing PHP object to JSON
...ata->getJsonData());. In essence, implement the function from 5.4, but call it by hand.
Something like this would work, as get_object_vars() is called from inside the class, having access to private/protected variables:
function getJsonData(){
$var = get_object_vars($this);
foreach ($va...
How might I convert a double to the nearest integer value?
...ft.com/en-us/dotnet/api/system.convert.toint32?view=netframework-4.8#System_Convert_ToInt32_System_Single_
int result = 0;
try {
result = Convert.ToInt32(value);
}
catch (OverflowException) {
if (value > 0) result = int.MaxValue;
else result = int.Minvalue;
}
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Where in an Eclipse workspace is the list of projects stored?
...e.resources/.projects/
Your project can exist outside the workspace, but all Eclipse-specific metadata are stored in that org.eclipse.core.resources\.projects directory
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“PKIX path building failed” and “unable to find valid certification path to requested target”
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Note that instructions should be repeated for all certificates in the chain. Also certificate's alias name in command line should be unique.
– Lu55
Sep 12 '17 at 18:50
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Why does the order in which libraries are linked sometimes cause errors in GCC?
...asier for the reader to see real command lines).
Common files shared by all below commands
$ cat a.cpp
extern int a;
int main() {
return a;
}
$ cat b.cpp
extern int b;
int a = b;
$ cat d.cpp
int b;
Linking to static libraries
$ g++ -c b.cpp -o b.o
$ ar cr libb.a b.o
$ g++ -c d.cpp -o d.o
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What is the difference between Step Into and Step Over in the Eclipse debugger?
...e executed next, indicated by ->) at the f(x) line in g(), having been called by the g(2) line in main():
public class testprog {
static void f (int x) {
System.out.println ("num is " + (x+0)); // <- STEP INTO
}
static void g (int x) {
-> f(x); //
f(1); //...
How to copy an object in Objective-C
...deep, logical copy. In this, we make a copy of the object, but without actually doing it bit by bit - we want an object that behaves the same for all intents and purposes, but isn't (necessarily) a memory-identical clone of the original - the Objective C manual calls such an object "functionally ind...