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What is the difference between exit and return? [duplicate]
...d, hence it wouldn't make much difference: allocated memory will be freed, file ressource closed and so on. But it may matter if your destructor performs IOs. For instance automatic C++ OStream locally created won't be flushed on a call to exit and you may lose some unflushed data (on the other hand...
What are the rules about using an underscore in a C++ identifier?
...and identifiers which are always reserved either for any use or for use as file scope identifiers.
All identifiers that begin with an underscore and either an uppercase letter or another
underscore are always reserved for any use.
All identifiers that begin with an underscore are always ...
Convert Python dictionary to JSON array
...�"}
>>> json.loads(json1)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.7/json/__init__.py", line 328, in loads
return _default_decoder.decode(s)
File "/usr/lib/python2.7/json/decoder.py", line 365, in decode
obj, e...
Pass entire form as data in jQuery Ajax function
...ou want to send a form with post method. For example if you want to pass a file via ajax its not gonna work.
Suppose that we have a form with this id : "myform".
the better solution is to make a FormData and send it:
var myform = document.getElementById("myform");
var fd = new FormData(my...
How to keep the spaces at the end and/or at the beginning of a String?
I have to concatenate these two strings from my resource/value files:
16 Answers
16
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Loop through an array of strings in Bash?
... is in America
Vietnam is in Asia
France is in Europe
CVS variables or files in to a list. Changing the internal field separator from a space, to what ever you want. In the example below it is changed to a comma
List="Item 1,Item 2,Item 3"
Backup_of_internal_field_separator=$IFS
IFS=,
for it...
Backporting Python 3 open(encoding=“utf-8”) to Python 2
...mplemented purely in python and very slow, so if you need speed in reading files, it's not a good option.
If you need speed, and you need to support Python 2.6 or earlier, you can use codecs.open instead. It also has an encoding parameter, and is quite similar to io.open except it handles line-endin...
Do interfaces inherit from Object class in java
...
There is actually a superclass field in every .class file, including those that represent interfaces.
For an interface it always points to java.lang.Object. But that isn't used for anything.
Another way to look at it is:
interface MyInterface {
// ...
}
public myMethod...
Routes with Dash `-` Instead of Underscore `_` in Ruby on Rails
...
I am brand new to Rails. What file would you add a line like this into?
– Alan W. Smith
Feb 20 '12 at 15:15
3
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Checking Bash exit status of several commands efficiently
...If you invoke ls foo and get an error message of the form ls: foo: No such file or directory\n you understand the problem. If instead you get ls: foo: No such file or directory\nerror with ls\n you become distracted by superfluous information. In this case, It is easy enough to argue that the supe...