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Create JSON-object the correct way
...ith "{}", you better make sure to force json_encode() to encode as object, by passing the JSON_FORCE_OBJECT constant.
$post_data = json_encode(array('item' => $post_data), JSON_FORCE_OBJECT);
"{}" brackets specify an object and "[]" are used for arrays according to JSON specification.
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Getting attributes of a class
...in the expression inspect.getmembers(MyClass, ..., MyClass can be replaced by a class or an object, and if you need the list of the values of your objects, you must replace MyClass by your object variable (or self if you put this expression in a def __repr__() method like me).
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List all tables in postgresql information_schema
...om information_schema.tables to get a listing of every table being managed by Postgres for a particular database.
You can also add a where table_schema = 'information_schema' to see just the tables in the information schema.
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Strengths of Shell Scripting compared to Python [closed]
I tried to learn shell(bash) scripting few times but was driven away by the syntax. Then I found Python and was able to do most of the things a shell script can do in Python. I am now not sure whether I should invest my time in learning shell scripting anymore. So I want to ask:
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Can not connect to local PostgreSQL
...hange the permissions on the dir for youself, but the socket is configured by postgres in postgresql.conf. This can be found in the same directory as pg_hba.conf (You'll have to figure out which one). Once you've set the permissions you will need to restart postgresql.
# postgresql.conf should con...
How can I round down a number in Javascript?
...; -4.0
Round towards zero - usually called Truncate(), but not supported by JavaScript - can be emulated by using Math.ceil() for negative numbers and Math.floor() for positive numbers.
+3.5 => +3.0 using Math.floor()
-3.5 => -3.0 using Math.ceil()
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How to Import .bson file format on mongodb
...llection_name /path/file.bson
For restoring the complete folder exported by mongodump:
mongorestore -d db_name /path/
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What is the difference between the GNU Makefile variable assignments =, ?=, := and +=?
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In the above answers, it is important to understand what is meant by "values are expanded at declaration/use time". Giving a value like *.c does not entail any expansion. It is only when this string is used by a command that it will maybe trigger some globbing. Similarly, a value like $(wil...
Is it a good practice to place C++ definitions in header files?
...e merit to putting code in the header, this can allow more clever inlining by the compiler. But at the same time, it can destroy your compile times since all code has to be processed every time it is included by the compiler.
Finally, it is often annoying to have circular object relationships (some...
How do I wrap link_to around some html ruby code?
...ink around view code? I can't figure out how to pass multiple lines with ruby code to a single link_to method. The result I am looking for is that you click the column and get the show page:
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