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How do I get a file extension in PHP?
...uilt-in function to do that and not PHP (I am looking at Pythonistas right now :-)).
In fact, it does exist, but few people know it. Meet pathinfo():
$ext = pathinfo($filename, PATHINFO_EXTENSION);
This is fast and built-in. pathinfo() can give you other information, such as canonical path, depe...
Efficient way to apply multiple filters to pandas DataFrame or Series
...ist or any iterable. We will create boolean variable just like before, but now we will negate the boolean variable by placing ~ in the front.
For example
list = [1, 0]
df[df.col1.isin(list)]
share
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How do I remove a property from a JavaScript object?
...d values. The delete operator is used to remove these keys, more commonly known as object properties, one at a time.
var obj = {
myProperty: 1
}
console.log(obj.hasOwnProperty('myProperty')) // true
delete obj.myProperty
console.log(obj.hasOwnProperty('myProperty')) // false
T...
Why is Go so slow (compared to Java)?
...fically, the goroutine scheduler isn't pre-emptive). Beyond that, I don't know Google's plans, whether the g compilers will ever be fiercely optimising, or if only gccgo will.
– Steve Jessop
Apr 24 '10 at 17:46
...
Java 7 language features with Android
...ng if anyone has tried using new Java 7 language features with Android?
I know that Android reads the bytecode that Java spits out and turns it to dex. So I guess my question is can it understand the bytecode of Java 7?
...
Sleep for milliseconds
I know the POSIX sleep(x) function makes the program sleep for x seconds. Is there a function to make the program sleep for x milliseconds in C++?
...
Reading specific lines only
...
linecache now appears to only work for python source files
– Paul H
Oct 11 '17 at 17:32
...
Email Address Validation in Android on EditText [duplicate]
...([a-zA-Z]+[\\w-]+\\.)+[a-zA-Z]{2,4})$").matcher(email).matches();
}
Now check with String of EditText:
if(isValidEmailId(edtEmailId.getText().toString().trim())){
Toast.makeText(getApplicationContext(), "Valid Email Address.", Toast.LENGTH_SHORT).show();
}else{
Toast.makeText(get...
How to export table as CSV with headings on Postgresql?
...
For v9.5, the command is now COPY products_273 TO '/tmp/products_199.csv' WITH (FORMAT CSV, HEADER);
– Shubham Goyal
Apr 20 '16 at 10:02
...
Regex Email validation
...s that are being issued, as you can have TLD's with more than 3 characters now.
– AaronLS
Jul 22 '13 at 19:04
This reg...