大约有 30,000 项符合查询结果（耗时：0.0463秒） [XML]
LINQ .Any VS .Exists - What's the difference?
...wer (if I have set this up properly to evaluate both values at almost same time)
var list1 = Generate(1000000);
var forceListEval = list1.SingleOrDefault(o => o == "0123456789012");
if (forceListEval != "sdsdf")
{
var s = string.Empty;
var ...
Alternative to google finance api [closed]
...SON output from query such as
https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=MSFT&apikey=demo
DON'T Try Yahoo Finance API (it is DEPRECATED or UNAVAILABLE NOW).
Here is a link to previous Yahoo Finance API discussion on StackOverflow.
Here's an alternative link to...
How to set time zone of a java.util.Date?
...have parsed a java.util.Date from a String but it is setting the local time zone as the time zone of the date object.
...
What is the difference between bindParam and bindValue?
...(), the variable is bound as a reference and will only be evaluated at the time that PDOStatement::execute() is called.
And execute
call PDOStatement::bindParam() to bind PHP variables to the parameter markers: bound variables pass their value as input and receive the output value, if any, of...
What specifically are wall-clock-time, user-cpu-time, and system-cpu-time in UNIX?
... can take a guess based on the names, but what specifically are wall-clock-time, user-cpu-time, and system-cpu-time in UNIX?
...
Parse date string and change format
...
datetime module could help you with that:
datetime.datetime.strptime(date_string, format1).strftime(format2)
For the specific example you could do
>>> datetime.datetime.strptime('Mon Feb 15 2010', '%a %b %d %Y').str...
Why is require_once so bad to use?
..., this is only relevant to your code if you're running *_once thousands of times.
<?php // test.php
$LIMIT = 1000000;
$start = microtime(true);
for ($i=0; $i<$LIMIT; $i++)
if (!defined('include.php')) {
require('include.php');
define('include.php', 1);
}
$mid = m...
Text Progress Bar in the Console [closed]
... Complete
if iteration == total:
print()
Sample Usage
import time
# A List of Items
items = list(range(0, 57))
l = len(items)
# Initial call to print 0% progress
printProgressBar(0, l, prefix = 'Progress:', suffix = 'Complete', length = 50)
for i, item in enumerate(items):
# Do s...
Why use strict and warnings?
...h their fully qualified name (for ex: $MAIN::variablename).
So, a compile-time error is triggered if you attempt to access a variable that hasn't met at least one of the following criteria:
Predefined by Perl itself, such as @ARGV, %ENV, and all the global punctuation variables such as $. or $_.
...
Count occurrences of a char in plain text file
Is there any way under linux/terminal to count, how many times the char f occurs in a plain text file?
5 Answers
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