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Find the files existing in one directory but not in the other [closed]
I'm trying to find the files existing in one directory but not in the other, I tried to use this command:
14 Answers
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How do I syntax check a Bash script without running it?
Is it possible to check a bash script syntax without executing it?
8 Answers
8
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What is the pythonic way to detect the last element in a 'for' loop?
...nerally superior solution as it depends on what you are trying to do. For example, if you are building a string from a list, it's naturally better to use str.join() than using a for loop “with special case”.
Using the same principle but more compact:
for i, line in enumerate(data_list):
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When to use self over $this?
...embers,
use self::$member for static members.
Full Answer
Here is an example of correct usage of $this and self for non-static and static member variables:
<?php
class X {
private $non_static_member = 1;
private static $static_member = 2;
function __construct() {
echo $...
Location of my.cnf file on macOS
...L. The problem is, where should my.cnf file be located? I'm using Mac OS X Lion.
30 Answers
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Swift: Testing optionals for nil
I'm using Xcode 6 Beta 4. I have this weird situation where I cannot figure out how to appropriately test for optionals.
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How to disable GCC warnings for a few lines of code
...n GCC you can override per file compiler flags . How can I do this for "next line", or with push/pop semantics around areas of code using GCC?
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How to get a user's client IP address in ASP.NET?
... address in ASP.NET, but this is usually the user's ISP's IP address, not exactly the user's machine IP address who for example clicked a link. How can I get the real IP Address?
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How to initialize an array's length in JavaScript?
...integer to the Array constructor using the var test = new Array(4); syntax.
18 Answers
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What should I set JAVA_HOME environment variable on macOS X 10.6?
...rences. Here's a snippet from my .bashrc file, which sets this variable:
export JAVA_HOME=$(/usr/libexec/java_home)
I haven't experienced any problems with that technique.
Occasionally I do have to change the value of JAVA_HOME to an earlier version of Java. For example, one program I'm maintain...