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Open a URL in a new tab (and not a new window)
... is a trick,
function openInNewTab(url) {
var win = window.open(url, '_blank');
win.focus();
}
In most cases, this should happen directly in the onclick handler for the link to prevent pop-up blockers, and the default "new window" behavior. You could do it this way, or by adding an event li...
Getting Java version at runtime
... every JVM. There are two possible formats for it:
Java 8 or lower: 1.6.0_23, 1.7.0, 1.7.0_80, 1.8.0_211
Java 9 or higher: 9.0.1, 11.0.4, 12, 12.0.1
Here is a trick to extract the major version: If it is a 1.x.y_z version string, extract the character at index 2 of the string. If it is a x.y.z v...
Immutable vs Mutable types
... pass by value in C. A counterexample to your analogy is if you do def f(my_list): my_list = [1, 2, 3]. With pass-by-reference in C, the value of the argument could change by calling that function. In Python, that function doesn't do anything. def f(my_list): my_list[:] = [1, 2, 3] would do somethin...
Check if a value is within a range of numbers
...could use the inRange() function:
https://lodash.com/docs/4.17.15#inRange
_.inRange(3, 2, 4);
// => true
_.inRange(4, 8);
// => true
_.inRange(4, 2);
// => false
_.inRange(2, 2);
// => false
_.inRange(1.2, 2);
// => true
_.inRange(5.2, 4);
// => false
_.inRange(-3, -2, -6);
...
How exactly does a generator comprehension work?
...s, and yields each item out of the expression, one by one.
>>> my_list = [1, 3, 5, 9, 2, 6]
>>> filtered_list = [item for item in my_list if item > 3]
>>> print(filtered_list)
[5, 9, 6]
>>> len(filtered_list)
3
>>> # compare to generator expression
.....
How to include jar files with java file and compile in command prompt
...r your dependency jar files as shown below:
set classpath=C:\Users\sarath_sivan\Desktop\jars\servlet-api.jar; C:\Users\sarath_sivan\Desktop\jars\spring-jdbc-3.0.2.RELEASE; C:\Users\sarath_sivan\Desktop\jars\spring-aop-3.0.2.RELEASE;
Now, you may compile your java file. (command: javac YourJavaFile...
How to generate JAXB classes from XSD?
....xml.bind.*;
import javax.xml.transform.stream.StreamSource;
import org.w3._2005.atom.FeedType;
public class Demo {
public static void main(String[] args) throws Exception {
JAXBContext jc = JAXBContext.newInstance("org.w3._2005.atom");
Unmarshaller unmarshaller = jc.createUnm...
What is the most efficient way to loop through dataframes with pandas? [duplicate]
...if close is a 1-d array, and you want the day-over-day percent change,
pct_change = close[1:]/close[:-1]
This computes the entire array of percent changes as one statement, instead of
pct_change = []
for row in close:
pct_change.append(...)
So try to avoid the Python loop for i, row in en...
What do the python file extensions, .pyc .pyd .pyo stand for?
...could in some rare cases result in malfunctioning programs. Currently only __doc__ strings are removed from the bytecode, resulting in more compact ‘.pyo’ files. Since some programs may rely on having these available, you should only use this option if you know what you're doing.
A program doe...
How to send an object from one Android Activity to another using Intents?
...el, you must do this in the same order you put them in (that is, in a FIFO approach).
Once you have your objects implement Parcelable it's just a matter of putting them into your Intents with putExtra():
Intent i = new Intent();
i.putExtra("name_of_extra", myParcelableObject);
Then you can pull ...