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127 Return code from $?
What is the meaning of return value 127 from $? in UNIX.
8 Answers
8
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CSS: how do I create a gap between rows in a table?
Meaning making the resultant table look less like this:
12 Answers
12
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What is the attribute property=“og:title” inside meta tag?
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og:title is one of the open graph meta tags. og:... properties define objects in a social graph. They are used for example by Facebook.
og:title stands for the title of your object as it should appear within the graph (see here for more http://ogp.me/ )
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Why are mutable structs “evil”?
Following the discussions here on SO I already read several times the remark that mutable structs are “evil” (like in the answer to this question ).
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Why does python use 'else' after for and while loops?
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It's a strange construct even to seasoned Python coders. When used in conjunction with for-loops it basically means "find some item in the iterable, else if none was found do ...". As in:
found_obj = None
for obj in objects:
if obj.key == search_key:
found_obj = obj
brea...
what is the basic difference between stack and queue?
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Stack is a LIFO (last in first out) data structure. The associated link to wikipedia contains detailed description and examples.
Queue is a FIFO (first in first out) data structure. The associated link to wikipedia contains detailed description a...
How to scale Docker containers in production
... this answer over the years.
Please be aware that this question was asked in August 2013, when Docker was still a very new technology. Since then: Kubernetes was launched on June 2014, Docker swarm was integrated into the Docker engine in Feb 2015, Amazon launched it's container solution, ECS, in A...
How to get first and last day of the week in JavaScript
...is the first day + 6
var firstday = new Date(curr.setDate(first)).toUTCString();
var lastday = new Date(curr.setDate(last)).toUTCString();
firstday
"Sun, 06 Mar 2011 12:25:40 GMT"
lastday
"Sat, 12 Mar 2011 12:25:40 GMT"
This works for firstday = sunday of this week and last day = saturday for th...
How to add to the PYTHONPATH in Windows, so it finds my modules/packages?
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You know what has worked for me really well on windows.
My Computer > Properties > Advanced System Settings > Environment Variables >
Just add the path as C:\Python27 (or wherever you installed python)
OR
Then under system variables I create a new Variable...
How can I update npm on Windows?
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This is the new best way to upgrade npm on Windows.
Run PowerShell as Administrator
Set-ExecutionPolicy Unrestricted -Scope CurrentUser -Force
npm install -g npm-windows-upgrade
npm-windows-upgrade
Note: Do not run npm i -g npm. Instead use npm-windows-upgrade to u...