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What is the difference between String.Empty and “” (empty string)?
In .NET, what is the difference between String.Empty and "" , and are they interchangable, or is there some underlying reference or Localization issues around equality that String.Empty will ensure are not a problem?
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How to exit if a command failed?
...m a noob in shell-scripting. I want to print a message and exit my script if a command fails. I've tried:
8 Answers
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Thread context switch Vs. process context switch
...ll me what is exactly done in both situations? What is the main cost each of them?
10 Answers
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How can I remove specific rules from iptables?
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Execute the same commands but replace the "-A" with "-D". For example:
iptables -A ...
becomes
iptables -D ...
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MySQL “WITH” clause
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Update: MySQL 8.0 is finally getting the feature of common table expressions, including recursive CTEs.
Here's a blog announcing it: http://mysqlserverteam.com/mysql-8-0-labs-recursive-common-table-expressions-in-mysql-ctes/
Below is my earlier a...
Why can't variable names start with numbers?
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Because then a string of digits would be a valid identifier as well as a valid number.
int 17 = 497;
int 42 = 6 * 9;
String 1111 = "Totally text";
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How do I auto size a UIScrollView to fit its content
...there a way to make a UIScrollView auto-adjust to the height (or width) of the content it's scrolling?
21 Answers
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How to create a backup of a single table in a postgres database?
Is there a way to create a backup of a single table within a database using postgres? And how? Does this also work with the pg_dump command?
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How do I reformat HTML code using Sublime Text 2?
I've got some poorly-formatted HTML code that I'd like to reformat. Is there a command that will automatically reformat HTML code in Sublime Text 2 so it looks better and is easier to read?
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Instagram how to get my user id from username?
I'm in the process of embedding my image feed in my website using JSON, the URL needs my user id so I can retrieve this feed.
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