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How to delete a column from a table in MySQL
...OP, ADD and ALTER multiple columns on the same table in the one statement. From the MySQL reference manual:
You can issue multiple ADD, ALTER, DROP, and CHANGE clauses in a single ALTER TABLE statement, separated by commas. This is a MySQL extension to standard SQL, which permits only one of eac...
What exactly is a C pointer if not a memory address?
...their addresses in pointers to them. Instead you can number your variables from 1 to whatever and store that number in the pointer. That is perfectly legal per the language standard so long as the implementation knows how to transform those numbers into addresses and how to do pointer arithmetic wit...
How to delete an element from an array in C#
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Removing from an array itself is not simple, as you then have to deal with resizing. This is one of the great advantages of using something like a List<int> instead. It provides Remove/RemoveAt in 2.0, and lots of LINQ extensi...
How to export a Vagrant virtual machine to transfer it
...his, I'll call it dirty way and clean way:
1. The dirty way
Create a box from your current virtual environment, using vagrant package command:
http://docs.vagrantup.com/v2/cli/package.html
Then copy the box to the other pc, add it using vagrant box add and run it using vagrant up as usual.
Keep...
How do I find out which keystore was used to sign an app?
...ore and it causes Google login to fail. I had to download the APK directly from PlayStore and find the actual SHA1 to register it in the Google Cloud console.
– Alvin Rusli
Jan 4 '18 at 6:36
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Should I use JSLint or JSHint JavaScript validation? [closed]
...JavaScript. JSHint was a new fork of JSLint, but had not yet diverged much from the original.
Since then, JSLint has remained pretty much static, while JSHint has changed a great deal - it has thrown away many of JSLint's more antagonistic rules, has added a whole load of new rules, and has general...
What happened to “Always refresh from server” in IE11 developer tools?
... F12 developer tools in Internet Explorer 11 also have the "Always refresh from server" feature of the developer tools in IE 8-10?
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How do you fade in/out a background color using jquery?
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Demo : http://jsfiddle.net/5NB3s/2/
SetTimeout increases the lightness from 50% to 100%, essentially making the background white (you can choose any value depending on your color).
SetTimeout is wrapped in an anonymous function for it to work properly in a loop ( reason )
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How can I remove the string “\n” from within a Ruby string?
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If you want or don't mind having all the leading and trailing whitespace from your string removed you can use the strip method.
" hello ".strip #=> "hello"
"\tgoodbye\r\n".strip #=> "goodbye"
as mentioned here.
edit The original title for this question was different. My answ...
Equivalent to 'app.config' for a library (DLL)
...ame.dll.config, otherwise the below code won't work properly.
Now to read from this file have such function:
string GetAppSetting(Configuration config, string key)
{
KeyValueConfigurationElement element = config.AppSettings.Settings[key];
if (element != null)
{
string value = e...