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Why do you need to put #!/bin/bash at the beginning of a script file?
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its simple i myself found it, just add the param after that #!/usr/bin/env bash -x
– indianwebdevil
May 15 '17 at 13:38
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Ruby Metaprogramming: dynamic instance variable names
...:instance_variable_set), the method instance_variable_set receives the two parameters that it needs?
– Arnold Roa
Dec 2 '16 at 18:15
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rails simple_form - hidden field - create?
... this:
= simple_form_for @movie do |f|
= f.hidden :title, :value => params[:movie][:title]
= f.button :submit
Again only use my answer is you do not want to reset the value submitted by the user.
I hope this makes sense.
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form_for but to post to a different action
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I have done it like that
<%= form_for :user, url: {action: "update", params: {id: @user.id}} do |f| %>
Note the optional parameter id set to user instance id attribute.
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Check number of arguments passed to a Bash script
...between its arguments.
if [ "$#" -ne 1 ]; then
echo "Illegal number of parameters"
fi
Or
if test "$#" -ne 1; then
echo "Illegal number of parameters"
fi
Suggestions
When in Bash, prefer using [[ ]] instead as it doesn't do word splitting and pathname expansion to its variables that quoting...
How to define optional methods in Swift protocol?
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This method doesn't support optionals in parameters. I.e. you can't do that optional func doSomething(param: Int?)
– SoftDesigner
Nov 12 '16 at 10:20
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How to detect when facebook's FB.init is complete
...intain user login status between refreshes, set cookie to true in the init param object.
– M.K. Safi
Mar 8 '17 at 2:49
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Is there a way to change the spacing between legend items in ggplot2?
...g between legend keys
# @clauswilke
draw_key_polygon3 <- function(data, params, size) {
lwd <- min(data$size, min(size) / 4)
grid::rectGrob(
width = grid::unit(0.6, "npc"),
height = grid::unit(0.6, "npc"),
gp = grid::gpar(
col = data$colour,
fill = alpha(data$fill,...
How to create .pfx file from certificate and private key?
...ot CA and intermediate certs, then include them as well using multiple -in params
openssl pkcs12 -export -out domain.name.pfx -inkey domain.name.key -in domain.name.crt -in intermediate.crt -in rootca.crt
You can install openssl from here: openssl
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Deleting all pending tasks in celery / rabbitmq
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For Celery 2.x and 3.x:
When using worker with -Q parameter to define queues, for example
celery worker -Q queue1,queue2,queue3
then celery purge will not work, because you cannot pass the queue params to it. It will only delete the default queue.
The solution is to start...