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Remove useless zero digits from decimals in PHP
...966.70 + 0; // 966.7
Internally, this is equivalent to casting to float with (float)$num or floatval($num) but I find it simpler.
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How to print binary tree diagram?
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I've created simple binary tree printer. You can use and modify it as you want, but it's not optimized anyway. I think that a lot of things can be improved here ;)
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class BTreePrinterTest {
priva...
How do I check what version of Python is running my script?
...', 0)
# or
>>> sys.hexversion
34014192
To ensure a script runs with a minimal version requirement of the Python interpreter add this to your code:
assert sys.version_info >= (2, 5)
This compares major and minor version information. Add micro (=0, 1, etc) and even releaselevel (='alp...
How to redirect 'print' output to a file using python?
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The most obvious way to do this would be to print to a file object:
with open('out.txt', 'w') as f:
print >> f, 'Filename:', filename # Python 2.x
print('Filename:', filename, file=f) # Python 3.x
However, redirecting stdout also works for me. It is probably fine for a o...
How to do multiple arguments to map function where one remains the same in python?
... = [1, 2, 3]
import functools
map(functools.partial(add, y=2), a)
import itertools
map(add, a, itertools.repeat(2, len(a)))
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git: patch does not apply
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git apply --reject --whitespace=fix mychanges.patch worked for me.
Explanation
The --reject option will instruct git to not fail if it cannot determine how to apply a patch, but instead to apply indivdual hunks it can apply an...
Keep-alive header clarification
I was asked to build a site , and one of the co-developer told me That I would need to include the keep-alive header.
1 An...
What is the MySQL VARCHAR max size?
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Keep in mind that MySQL has a maximum row size limit
The internal representation of a MySQL table has a maximum row size limit of 65,535 bytes, not counting BLOB and TEXT types. BLOB and TEXT columns only contribute 9 to 12 bytes toward the row size limit because their c...
Clearing all cookies with JavaScript
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function deleteAllCookies() {
var cookies = document.cookie.split(";");
for (var i = 0; i < cookies.length; i++) {
var cookie = cookies[i];
var eqPos = cookie.indexOf("=");
var name = eqPos > -1 ? cookie.substr(0, eqPos) : cookie;
document.cooki...
How to make an AJAX call without jQuery?
How to make an AJAX call using JavaScript, without using jQuery?
23 Answers
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