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What is SaaS, PaaS and IaaS? With examples
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Examples: AWS Elastic Beanstalk, Windows Azure, Heroku, Force.com, Google App Engine, Apache Stratos.
While in SaaS (Software as a Service) model you are provided with access to application software often referred to as "on-demand software". You don't have to worry about the installation, setup and...
How to tell if a string is not defined in a Bash shell script
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For those whose want to look for the description of what the above means in the bash man page, look for the section "Parameter Expansion" and then for this text: "When not performing substring expansion, using the forms documented below, bash tests for a paramet...
Is it considered bad practice to perform HTTP POST without entity body?
... response_model=ResponseSuccess,
summary='',
description=''
)
async def post_disable_db(db_name: str):
try:
response: ResponseSuccess = Handlers.databases_handler.post_change_db_enabled_state(db_name, False)
except HTTPException as e:
...
Can I run multiple versions of Google Chrome on the same machine? (Mac or Windows)
...e the name of the directory:
Must start and end with a number. A dot may appear in between.
The numbers do not necessarily have to match the real version number (though it's convenient to use real version numbers...).
Regarding configuration: All preferences can be set at
chrome:...
iOS 6: How do I restrict some views to portrait and allow others to rotate?
I have an iPhone app that uses a UINavigationController to present a drill-down interface: First one view, then another, up to four levels deep. I want the first three views restricted to portrait orientation and only the last view should be allowed to rotate to landscape. When returning from the ...
javascript node.js next()
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This appears to be a variable naming convention in Node.js control-flow code, where a reference to the next function to execute is given to a callback for it to kick-off when it's done.
See, for example, the code samples here:
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Linux c++ error: undefined reference to 'dlopen'
...found some interesting facts. With CC=Clang, this works:
$CC -ldl -x c -o app.exe - << EOF
#include <dlfcn.h>
#include <stdio.h>
int main(void)
{
if(dlopen("libc.so.6", RTLD_LAZY | RTLD_GLOBAL))
printf("libc.so.6 loading succeeded\n");
else
printf("libc.so.6 loading fa...
How can I list all collections in the MongoDB shell?
...ons
The reason I call that non-JavaScript is because:
$ mongo prodmongo/app --eval "show collections"
MongoDB shell version: 3.2.10
connecting to: prodmongo/app
2016-10-26T19:34:34.886-0400 E QUERY [thread1] SyntaxError: missing ; before statement @(shell eval):1:5
$ mongo prodmongo/app --eva...
Why is the minimalist, example Haskell quicksort not a “true” quicksort?
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For a clear description of the partitioning-in-place process see interactivepython.org/courselib/static/pythonds/SortSearch/….
– pvillela
Aug 6 '17 at 0:48
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Coding Style Guide for node.js apps? [closed]
...with or eval
Use === over ==
Always declare your variables with var in the appropriate scope - don't fallback to the global scope
Wrap your app in a closure (function(){})() if you plan on releasing code that runs server-side as well as in the browser
Callbacks should take err as the first argument ...