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Easily measure elapsed time
I am trying to use time() to measure various points of my program.
26 Answers
26
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Get String in YYYYMMDD format from JS date object?
...thod will return the string '2015-08-31T23:00:00.000Z' because the date is converted to UTC/0-offset before being stringified.
– Luke Baulch
Sep 13 '15 at 2:44
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Regular expression to match URLs in Java
...egexBuddy. However, when I copied it as Java String flavor and pasted it into Java code, it does not work. The following class prints false :
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get UTC time in PHP
...ary 1 1970 00:00:00 GMT)". Note GMT. The fact that by default your system converts this to your timezone for display, is a user convenience. Internally, its always GMT.
– ToolmakerSteve
Apr 17 '19 at 12:09
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Reading JSON from a file?
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In python 3, we can use below method.
Read from file and convert to JSON
import json
from pprint import pprint
# Considering "json_list.json" is a json file
with open('json_list.json') as fd:
json_data = json.load(fd)
pprint(json_data)
with statement automatically cl...
PHP parse/syntax errors; and how to solve them
...re Bracket "["
BTW, there are also preprocessors and PHP 5.4 syntax down-converters if you're really clingy with older + slower PHP versions.
Other causes for Unexpected [ syntax errors
If it's not the PHP version mismatch, then it's oftentimes a plain typo or newcomer syntax mistake:
You can'...
What's up with Java's “%n” in printf?
...mode on a dos/windows system then when you write \n the file handling code converts it to \r\n. So by opening a file in text mode and using \n you get the platform specific line ending.
I can see why the designers of java didn't want to replicate C's hacky ideas regarding "text" and "binary" file ...
MySQL: selecting rows where a column is null
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I had the same issue when converting databases from Access to MySQL (using vb.net to communicate with the database).
I needed to assess if a field (field type varchar(1)) was null.
This statement worked for my scenario:
SELECT * FROM [table name] W...
java.util.regex - importance of Pattern.compile()?
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The compile() method is always called at some point; it's the only way to create a Pattern object. So the question is really, why should you call it explicitly? One reason is that you need a reference to the Matcher object so you can use its methods, like group(int) to r...
Get notified when UITableView has finished asking for data?
...plete the loading process before it ended. But Apple changed it at some point. Now the UITableView class can cache the reloadData call with all the row insert and delete calls. If you look at the @interface declaration for UITableView, you will find NSMutableArray member _reloadItems right under ...