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Can JSON start with “[”?
From what I can read on json.org , all JSON strings should start with { (curly brace), and [ characters (square brackets) represent an array element in JSON.
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What is a “static” function in C?
...nit, below the first declaration of that name. The function may be called from other units (and earlier parts of the same unit) via other means, e.g. a function pointer.
– M.M
Nov 30 '15 at 2:38
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A semantics for Bash scripts?
...rd splitting) and C (much of the shell's arithmetic syntax semantics comes from C).
The other root of the shell's syntax comes from its upbringing as a mishmash of individual UNIX utilities. Most of what are often builtins in the shell can actually be implemented as external commands. It throws man...
How can I open multiple files using “with open” in Python?
... of files all at the same time, you can use contextlib.ExitStack, starting from Python version 3.3:
with ExitStack() as stack:
files = [stack.enter_context(open(fname)) for fname in filenames]
# Do something with "files"
Most of the time you have a variable set of files, you likely want t...
What's the difference between @Component, @Repository & @Service annotations in Spring?
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From Spring Documentation:
The @Repository annotation is a marker for any class that fulfils the
role or stereotype of a repository (also known as Data Access Object
or DAO). Among the uses of this marker is the autom...
@ variables in Ruby on Rails
...able, or making it 'const' so that it can't be modified, etc)? I'm coming from a C/C++ & Java perspective, and the really vague and optional syntax is driving me nuts!
– Dan Devine
Jun 13 '18 at 18:05
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I want to execute shell commands from Maven's pom.xml
... same code in a child module. And I am trying to execute the mvn exec:exec from the parent pom.xml. And i get this error. But when i individually execute it it is working.
– NareshKumar
Aug 17 '10 at 5:04
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Different bash prompt for different vi editing mode?
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Fresh bash 4.3 and readline 6.3 have something for you guys.. from the changelog:
4. New Features in Readline
j. New user-settable variable, show-mode-in-prompt, adds a characters to the
beginning of the prompt indicating the current editing mode.
So putting
set show-mode-in-p...
Calculate difference in keys contained in two Python dictionaries
...ge for python:
https://github.com/seperman/deepdiff
Installation
Install from PyPi:
pip install deepdiff
Example usage
Importing
>>> from deepdiff import DeepDiff
>>> from pprint import pprint
>>> from __future__ import print_function # In case running on Python 2
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When to use an object instance variable versus passing an argument to the method
...f a class. Think of these as adjectives of the object that will be created from your class. If your instance data can be used to help describe the object, then it's probably safe to bet it's a good choice for instance data.
Local variables are used within the scope of methods to help them complete t...