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Create Pandas DataFrame from a string
...der to test some functionality I would like to create a DataFrame from a string. Let's say my test data looks like:
5 Ans...
Java Constructor Inheritance
...ows ClassCastException
Or even simpler:
class Super {
private final String msg;
Super(String msg){
if (msg == null) throw new NullPointerException();
this.msg = msg;
}
}
class Sub {
private final String detail;
Sub(String msg, String detail){
super(msg)...
node.js execute system command synchronously
...re("node-ffi");
var libc = new FFI.Library(null, {
"system": ["int32", ["string"]]
});
var run = libc.system;
run("echo $USER");
[EDIT Jun 2012: How to get STDOUT]
var lib = ffi.Library(null, {
// FILE* popen(char* cmd, char* mode);
popen: ['pointer', ['string', 'string']],
// voi...
Can you use reflection to find the name of the currently executing method?
...t 2):
protected void SetProperty<T>(T value, [CallerMemberName] string property = null)
{
this.propertyValues[property] = value;
OnPropertyChanged(property);
}
public string SomeProperty
{
set { SetProperty(value); }
}
The compiler will suppl...
When does static class initialization happen?
...
There is a common pitfall though. Primitives and Strings are substituted and not referenced. If you reference a class Other { public static final int VAL = 10; } from some class MyClass { private int = Other.VAL; }, the class Other will not be loaded. Instead, the compiler ...
Check if a string matches a regex in Bash script
...[[ ]], along with the regular expression match operator, =~, to check if a string matches a regex pattern.
For your specific case, you can write:
[[ $date =~ ^[0-9]{8}$ ]] && echo "yes"
Or more a accurate test:
[[ $date =~ ^[0-9]{4}(0[1-9]|1[0-2])(0[1-9]|[1-2][0-9]|3[0-1])$ ]] && ec...
How can I format a decimal to always show 2 decimal places?
... point and two to the right of it and no more...), then converting them to strings with str will work fine:
str(Decimal('10'))
# -> '10'
str(Decimal('10.00'))
# -> '10.00'
str(Decimal('10.000'))
# -> '10.000'
share...
Gson - convert from Json to a typed ArrayList
Using the Gson library, how do I convert a JSON string to an ArrayList of a custom class JsonLog ? Basically, JsonLog is an interface implemented by different kinds of logs made by my Android app--SMS logs, call logs, data logs--and this ArrayList is a collection of all of them. I keep gettin...
How to convert milliseconds to “hh:mm:ss” format?
...
You were really close:
String.format("%02d:%02d:%02d",
TimeUnit.MILLISECONDS.toHours(millis),
TimeUnit.MILLISECONDS.toMinutes(millis) -
TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(millis)), // The change is in this line
TimeUnit.MILLI...
How to define static property in TypeScript interface
...
You can define interface normally:
interface MyInterface {
Name:string;
}
but you can't just do
class MyClass implements MyInterface {
static Name:string; // typescript won't care about this field
Name:string; // and demand this one instead
}
To express that a class shou...