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`elif` in list comprehension conditionals
Can we use elif in list comprehension?
6 Answers
6
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difference between #if defined(WIN32) and #ifdef(WIN32)
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If you use #ifdef syntax, remove the brackets.
The difference between the two is that #ifdef can only use a single condition,
while #if defined(NAME) can do compound conditionals.
For example in your case:
#if defined(WIN...
How do I check if file exists in Makefile so I can delete it?
In the clean section of my Makefile I am trying to check if the file exists before deleting permanently. I use this code but I receive errors.
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Pandas conditional creation of a series/dataframe column
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If you only have two choices to select from:
df['color'] = np.where(df['Set']=='Z', 'green', 'red')
For example,
import pandas as pd
import numpy as np
df = pd.DataFrame({'Type':list('ABBC'), 'Set':list('ZZXY')})
df['col...
Detecting when a div's height changes using jQuery
...a plugin, actually it is a simple function written as a jQuery plugin.. so if you want.. strip off the plugin specfic code and use the core functions.
Note: This code doesn't use polling
check out this simple demo http://jsfiddle.net/aD49d/
$(function () {
var prevHeight = $('#test').height(...
Checking if a SQL Server login already exists
I need to check if a specific login already exists on the SQL Server, and if it doesn't, then I need to add it.
10 Answers
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When is finally run if you throw an exception from the catch block?
...lock is executed)
editing this 7 years later - one important note is that if e is not caught by a try/catch block further up the call stack or handled by a global exception handler, then the finally block may never execute at all.
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Ternary operator (?:) in Bash
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ternary operator ? : is just short form of if/else
case "$b" in
5) a=$c ;;
*) a=$d ;;
esac
Or
[[ $b = 5 ]] && a="$c" || a="$d"
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Physical vs. logical / soft delete of database record?
...de any reporting/display methods to take the flag into account.
As far as if it is a common practice - I would say yes, but as with anything whether you use it depends on your business needs.
EDIT: Thought of another disadvantange - If you have unique indexes on the table, deleted records will sti...
How to tell if node.js is installed or not
...ind further instructions. What does one really need to do? I wanted to see if it was actually working. So I executed a script called hello.js. It went as such:
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