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Checking for NULL pointer in C/C++ [closed]
... code review, a contributor is trying to enforce that all NULL checks on pointers be performed in the following manner:
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How to overload the operator++ in two different ways for postfix a++ and prefix ++a?
How to overload the operator++ in two different ways for postfix a++ and prefix ++a ?
5 Answers
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How to find all duplicate from a List? [duplicate]
I have a List<string> which has some words duplicated. I need to find all words which are duplicates.
9 Answers
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How to wrap text in LaTeX tables?
I am creating a report in LaTeX which involves a few tables. I'm stuck on that as my cell data in the table is exceeding the width of the page. Can I somehow wrap the text so that it falls into the next line in the same cell of the table?
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How can I merge properties of two JavaScript objects dynamically?
I need to be able to merge two (very simple) JavaScript objects at runtime. For example I'd like to:
63 Answers
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How do I quickly rename a MySQL database (change schema name)?
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For InnoDB, the following seems to work: create the new empty database, then rename each table in turn into the new database:
RENAME TABLE old_db.table TO new_db.table;
You will need to adjust the permissions after that.
For scripting in a shell, you can use either of the follow...
What is the difference between Ruby 1.8 and Ruby 1.9
...ion of Ruby (1.8) and the "new" version (1.9). Is there an "easy" or a "simple" explanation of the differences and why it is so different?
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Why do enum permissions often have 0, 1, 2, 4 values?
Why are people always using enum values like 0, 1, 2, 4, 8 and not 0, 1, 2, 3, 4 ?
7 Answers
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How do I include a pipe | in my linux find -exec command?
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The job of interpreting the pipe symbol as an instruction to run multiple processes and pipe the output of one process into the input of another process is the responsibility of the shell (/bin/sh or equivalent).
In your example you can ei...
SQL join: selecting the last records in a one-to-many relationship
Suppose I have a table of customers and a table of purchases. Each purchase belongs to one customer. I want to get a list of all customers along with their last purchase in one SELECT statement. What is the best practice? Any advice on building indexes?
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