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C++ unordered_map using a custom class type as the key
I am trying to use a custom class as key for an unordered_map , like the following:
3 Answers
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Android Studio Project Structure (v.s. Eclipse Project Structure)
...ing to usable in feature sub-folder:
Update your Android Studio 3.0.1 01_2018:
ToolTip:
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How can I do test setup using the testing package in Go
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This can be achieved by putting a init() function in the myfile_test.go file. This will be run before the init() function.
// myfile_test.go
package main
func init() {
/* load test data */
}
The myfile_test.init() will be called before the package init() function.
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How should you build your database from source control?
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Store ALTER scripts: 1 BIG script (or directory of scripts named liked 001_AlterXXX.sql, so that running them in natural sort order will upgrade from version A to B)
Which types of objects shouldn't be version controlled?
Sequences?
Grants?
User Accounts?
see 2. If your users/roles (or technica...
Javascript object Vs JSON
...your IDE for better understanding and comment the
line containing invalid_javascript_object_no_quotes object declaration to avoid compile time error.
// Valid JSON strings(Observe quotes)
valid_json = '{"key":"value"}'
valid_json_2 = '{"key 1":"value 1"}' // Observe the space(special character) i...
How to change the output color of echo in Linux
...are as follows:
Num Colour #define R G B
0 black COLOR_BLACK 0,0,0
1 red COLOR_RED 1,0,0
2 green COLOR_GREEN 0,1,0
3 yellow COLOR_YELLOW 1,1,0
4 blue COLOR_BLUE 0,0,1
5 magenta COLOR_MAGENTA 1,0,1
6 cyan COLOR_CY...
The new keyword “auto”; When should it be used to declare a variable type? [duplicate]
... used.
Another place where auto can be used is when you use new1 or make_* functions , such as here:
//without auto. Not that good, looks cumbersome
SomeType<OtherType>::SomeOtherType * obj1 = new SomeType<OtherType>::SomeOtherType();
std::shared_ptr<XyzType> obj2 = std::make_s...
How to refresh Android listview?
... notifyDataChanged() didnt update the view.
– cantona_7
Aug 27 at 13:12
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What's the difference between event.stopPropagation and event.preventDefault?
...:
<div id="a">
<a id="b" href="http://www.google.com/" target="_blank">Google</a>
</div>
<p id="c"></p>
JavaScript:
var el = document.getElementById("c");
function capturingOnClick1(ev) {
el.innerHTML += "DIV event capture<br>";
}
function captur...
How many threads can a Java VM support?
...u can create, and I was totally dumbfounded by the result.
Using JDK 1.6.0_11 on Vista Home Premium SP1, I executed Charlie's test application with different heap sizes, between 2 MB and 1024 MB.
For example, to create a 2 MB heap, I'd invoke the JVM with the arguments -Xms2m -Xmx2m.
Here are my ...