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How can mixed data types (int, float, char, etc) be stored in an array?
... element, you would do:
my_array[0].type = is_int;
my_array[0].val.ival = 3;
When you want to access an element of the array, you must first check the type, then use the corresponding member of the union. A switch statement is useful:
switch (my_array[n].type) {
case is_int:
// Do stuff for ...
How to read the mode field of git-ls-tree's output
I know the last 3 oct digits are file mode, but what are the first 3 digits for?
I can't find it out in git user's manual.
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What is database pooling?
... | |
| Clients |
+---------+ |
| |-+ (1) +------+ (3) +----------+
| Clients | ===#===> | Open | =======> | RealOpen |
| | | +------+ +----------+
+---------+ | ^
| | (2)
| /------\
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Create module variables in Ruby
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answered Apr 16 '11 at 23:52
coreywardcoreyward
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How do I convert an integer to binary in JavaScript?
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13 Answers
13
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How do I create a MongoDB dump of my database?
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83
Use mongodump:
$ ./mongodump --host prod.example.com
connected to: prod.example.com
all dbs
DAT...
How to remove a field from params[:something]
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rmcsharry
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answered Mar 1 '11 at 5:05
Jeremy RutenJeremy...
How to run Ruby code from terminal?
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edited Sep 17 '13 at 21:01
Lenin Raj Rajasekaran
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Running shell command and capturing the output
...ons, it is no longer the recommended approach.
Modern versions of Python (3.5 or higher): run
If you're using Python 3.5 or higher, and do not need backwards compatibility, the new run function is recommended. It provides a very general, high-level API for the subprocess module. To capture the out...
How do I sort an array of hashes by a value in the hash?
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answered Jun 30 '10 at 23:29
Stéphan KochenStéphan Kochen
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