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How to determine if a process runs inside lxc/Docker?
... the init process, and when you are not in a container, that will be / for all hierarchies. When you are inside a container, you will see the name of the anchor point. With LXC/Docker containers, it will be something like /lxc/<containerid> or /docker/<containerid> respectively.
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Efficient string concatenation in C++
...ring and various workarounds to speed up concatenation. Are any of these really necessary? If so, what is the best way to concatenate strings in C++?
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JavaScript Nested function
...ion in the same way it would change the scope of a variable. This is especially important for use with closures to reduce total global namespace pollution.
The functions defined within another function won't be accessible outside the function unless they have been attached to an object that is acce...
Useless use of cat?
...my rationale.
I had not meant to be defensive in responding to him. After all, in my younger years, I would have written the command as grep foo file.txt | cut ... | cut ... because whenever you do the frequent single greps you learn the placement of the file argument and it is ready knowledge that...
Rendering HTML inside textarea
...nswered Jan 16 '11 at 14:28
mekwallmekwall
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How to find and turn on USB debugging mode on Nexus 4
...ment kit), view this info.
From a Home screen, swipe up to display all apps.
Navigate: Settings > System > Advanced.
Developer options .
If Developer options isn't available, navigate: Settings > About phone then tap Build number 7 times. Tap the Back icon to Setti...
Check if a temporary table exists and delete if it exists before creating a temporary table
...te to say that double dot is the default schema of the user, which is typically dbo (which isn't a great idea, making dbo the default schema for users but that's usually how it goes)
– jcollum
Oct 22 '14 at 17:45
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Which is fastest? SELECT SQL_CALC_FOUND_ROWS FROM `table`, or SELECT COUNT(*)
When you limit the number of rows to be returned by a SQL query, usually used in paging, there are two methods to determine the total number of records:
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What is the recommended approach towards multi-tenant databases in MongoDB?
...ecifics of the database design.
Collections (or buckets or however they call it in different DBs) are not the same thing as security schemas in RDBMS despite they behave as container for documents they are useless for applying good tenant separation. I couldn't find NoSQL database that can apply s...
What are detached, persistent and transient objects in hibernate?
...(but can still be modified and reattached to a new Session later though).
All this is clearly explained in the whole Chapter 10. Working with objects of the Hibernate documentation that I'm only paraphrasing above. Definitely, a must-read.
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