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Virtual functions and performance - C++
In my class design, I use abstract classes and virtual functions em>x m>tensively. I had a feeling that virtual functions affects the performance. Is this true? But I think this performance difference is not noticeable and looks like I am doing premature optimization. Right?
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Dynamic variable names in Bash
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declare "magic_variable_$1=$(ls | tail -1)"
and use indirect parameter em>x m>pansion to access the value.
var="magic_variable_$1"
echo "${!var}"
See BashFAQ: Indirection - Evaluating indirect/reference variables.
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CommandError: You must set settings.ALLOWED_HOSTS if DEBUG is False
I use Django 1.6.5 in my program tm>x m>site with the settings:
8 Answers
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Should you declare methods using overloads or optional parameters in C# 4.0?
...onal back in my VB6 days and have since missed it, it will reduce a lot of m>X m>ML comment duplication in C#.
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Kotlin: how to pass a function as parameter to another?
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Use :: to signify a function reference, and then:
fun foo(m: String, bar: (m: String) -> Unit) {
bar(m)
}
// my function to pass into the other
fun buz(m: String) {
println("another message: $m")
}
// someone passing buz into foo
fun something() {
foo("hi", ::buz)
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Does it make sense to use Require.js with Angular.js? [closed]
... the Angular team. Require is a pattern that made more sense in other contem>x m>ts, and shoe-horning it into Angular is not, IMHO, a best-practice.
– m>X m>ML
Sep 6 '13 at 4:51
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Where is the Java SDK folder in my computer? Ubuntu 12.04
...link -f $(which java)
Read more at Where can I find the Java SDK in Linum>x m>?
WAY-2 (Better than WAY-1) : Below answer is still working and try it if above command is not working
for you.
You need to dig into symbolic links. Below is steps to get Java directory
Step 1:
$ whereis java
ja...
What is the difference between the kernel space and the user space?
...ormal programs run in user space. User space is basically a form of sand-bom>x m>ing -- it restricts user programs so they can't mess with memory (and other resources) owned by other programs or by the OS kernel. This limits (but usually doesn't entirely eliminate) their ability to do bad things like cra...
How do I increase the capacity of the Eclipse output console?
...heck this or change the number in the "Console buffer size (characters)" tem>x m>t bom>x m> below.
(This is in Galileo, Helios CDT, Kepler, Juno, Luna, Mars, Neon, Om>x m>ygen and 2018-09)
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Best way to work with dates in Android SQLite [closed]
I'm having some trouble working with dates on my Android application that uses SQLite.
I have a couple questions:
9 Answers...