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Java null check why use == instead of .equals()
...n general yes. However, the default implementation of both is the same, if my understanding is correct. Looking at the source code, .equals() basically does an == check. hg.openjdk.java.net/jdk7/jdk7/jdk/file/tip/src/share/classes/…
– Ayush
Jun 19 at 9:25
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Remove all whitespace in a string
...tespace characters (google them and you'll see) but "General Punctuation". My answer only deals with removing characters classified as whitespace.
– Emil Stenström
Jul 7 '16 at 18:04
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Redirecting from HTTP to HTTPS with PHP
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On my AWS beanstalk server, I don't see $_SERVER['HTTPS'] variable. I do see $_SERVER['HTTP_X_FORWARDED_PROTO'] which can be either 'http' or 'https' so if you're hosting on AWS, use this:
if ($_SERVER['HTTP_HOST'] != 'localhos...
Replacing a char at a given index in string? [duplicate]
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I suddenly needed to do this task and found this topic.
So, this is my linq-style variant:
public static class Extensions
{
public static string ReplaceAt(this string value, int index, char newchar)
{
if (value.Length <= index)
return value;
else
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Installing Numpy on 64bit Windows 7 with Python 2.7.3 [closed]
...en-us/articles/…): Can I redistribute the Intel Math Kernel Library with my application? Yes. When you purchase Intel MKL, you receive rights to redistribute computational portions of Intel MKL with your application.
– reverse_engineer
Aug 19 '14 at 13:56
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.NET String.Format() to add commas in thousands place for a number
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I found this to be the simplest way:
myInteger.ToString("N0")
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What is the C++ function to raise a number to a power?
....0, N)
Some lawyer crap from me again. I've often fallen in this pitfall myself, so I'm going to warn you about it.
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What exactly does a jar file contain?
As an intern, I use company code in my projects and they usually send me a jar file to work with. I add it to the build path in Eclipse and usually all is fine and dandy.
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How to write into a file in PHP?
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I use the following code to write files on my web directory.
write_file.html
<form action="file.php"method="post">
<textarea name="code">Code goes here</textarea>
<input type="submit"value="submit">
</form>
write_file.php
<?php
//...
linq query to return distinct field values from a list of objects
... can use an alternative overload of GroupBy to make this simpler too - see my answer for an example.
– Jon Skeet
Jun 3 '11 at 18:55
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