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What is the proper declaration of main?
... function would not be the main function that designates where the program starts.
The main function cannot be declared as static or inline. It also cannot be overloaded; there can be only one function named main in the global namespace.
The main function cannot be used in your program: you are n...
Convert hex string to int in Python
...1, in <module>
NameError: name 'ffff' is not defined
Python numbers start with a numeric character, while Python names cannot start with a numeric character.
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Go to back directory browsing after opening file in vim
...ourceforge
:Explorer: opens the Explorer, same as :E (if not other command starting with E is defined (see stackoverflow), or as :Ex (see vim.wikia) (by @drug_user841417).
:b#: goes back to the "previously edited buffers". See vim.wikia
:e# or Ctrl-6 (or Ctrl-^): goes back to the "previously edited...
Android: how do I check if activity is running?
...{
static boolean active = false;
@Override
public void onStart() {
super.onStart();
active = true;
}
@Override
public void onStop() {
super.onStop();
active = false;
}
}
The only gotcha is that if you use it in two act...
How to have the formatter wrap code with IntelliJ?
...l +Shift + S (for example) that do all this things:
Edit > Macros > Start Macro Recording (the recording will start). Click where you need.
For example:
Code > Reformat Code
Code > Auto-Indent Lines
Code > Optimize Imports
Code > Rearrange Code
File > Save All
... (all that y...
Regex: Remove lines containing “help”, etc
...is ! And one final question, can we do sed 'help/' to delete all the lines starting (not containing) with help?
– jeff
Mar 21 '14 at 20:15
3
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How to check if PHP array is associative or sequential?
...s
Secondly, how to determine whether an array has sequential numeric keys, starting from 0
Consider which of these behaviours you actually need. (It may be that either will do for your purposes.)
The first question (simply checking that all keys are numeric) is answered well by Captain kurO.
For...
“Remote System Explorer Operation” causing freeze for couple of seconds
...he steps:
Click on the Windows > Preferences menu
Select General > Startup and Shutdown in the tree
Uncheck RSE UI
Select Remote Systems in the tree
Uncheck Re-open Remote Systems view to previous state
Restart Eclipse
Note: You must have Eclipse 4.3.1 (or newer) due to a bug on previous v...
Django - “no module named django.core.management”
...
Most probably in your manage.py the first line starts with !/usr/bin/python which means you are using the system global python rather than the one in your virtual environment.
so replace
/usr/bin/python
with
~/projectpath/venv/bin/python
and you should be good.
...
Mongodb Explain for Aggregation framework
...
Starting with MongoDB version 3.0, simply changing the order from
collection.aggregate(...).explain()
to
collection.explain().aggregate(...)
will give you the desired results (documentation here).
For older versions &g...