How can I split a command over multiple lines in the shell, when the command is part of an if statement? This works: if ! fab --fabfile=.deploy/fabfile.py --forward-agent --disable-known-hosts...
I found this line of a code in a class which I have to modify: ::Configuration * tmpCo = m_configurationDB;//pointer to current db and I don’t know what exactly...
MySQL 5.0.45 What is the syntax to alter a table to allow a column to be null, alternately what’s wrong with this: ALTER mytable MODIFY mycolumn varchar(255) null; I...
I was thinking if there exists a better/nicer way to negate an instanceof in Java. Actually, I’m doing something like: if(!(myObject instanceof SomeClass)) { /* do Something */ }...
I know that the >= operator means more than or equal to, but I’ve seen => in some source code. What’s the meaning of that operator? Here’s the code:...
Why are hexadecimal numbers prefixed as 0x? I understand the usage of the prefix but I don’t understand the significance of why 0x was chosen. 5 s 5 Short...
If I have a function which accepts more than one string parameter, the first parameter seems to get all the data assigned to it, and remaining parameters are passed...
Anyone knows how to concatenate strings in twig? I want to do something like: {{ concat('http://', app.request.host) }} 1Best Answer 11 This should work fine: {{ 'http://' ~ app.request.host...
I am storing a SQL query in my strings.xml file and I want to use String.Format to build the final string in code. The SELECT statement uses a like,...
I found this code in a RailsCast: def tag_names @tag_names || tags.map(&:name).join(' ') end What does the (&:name) in map(&:name) mean? 16 s 16 It’s shorthand for tags.map(&:name.to_proc).join(' ')...