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What is RSS and VSZ in Linux memory management
...ich has been allocated for normal program startup like text area, globals, etc.
on the second print, we have written to 8388608 KiB == 8GiB worth of pages. As a result, RSS increased by exactly 8GIB to 8390256 KiB == 8388608 KiB + 1648 KiB
RSS continues to increase in 8GiB increments. The last print...
What is the difference between “#!/usr/bin/env bash” and “#!/usr/bin/bash”?
...r in a completely different hierarchy branch (/opt/..., /Applications/..., etc.). That's why these often use the #!/usr/bin/env xxx shebang syntax.
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Does PostgreSQL support “accent insensitive” collations?
...Security for client programs has been tightened with Postgres 10.3 / 9.6.8 etc. You need to schema-qualify function and dictionary name as demonstrated when used in any indexes. See:
'text search dictionary “unaccent” does not exist' entries in postgres log, supposedly during automatic analyze...
How to print a number with commas as thousands separators in JavaScript
... (since 789 is a multiple of 3 digits, 678 is a multiple of 3 digits, 567, etc.). The negative assertion checks that the multiple of 3 digits does not have any digits after it. 789 has a period after it so it is exactly a multiple of 3 digits, so a comma goes there. 678 is a multiple of 3 digits but...
Different types of thread-safe Sets in Java
...t; and replacing the whole set on each modification.
The implementation sketch:
public abstract class CopyOnWriteSet<E> implements Set<E> {
private final AtomicReference<Set<E>> ref;
protected CopyOnWriteSet( Collection<? extends E> c ) {
ref = new A...
How do I adjust the anchor point of a CALayer, when Auto Layout is being used?
... the frame bigger, so we'd need to update any width or height constraints, etc..
If you're only using the transform for a temporary animation, then what's above may suffice since I don't believe auto layout will prevent the in-flight animation from presenting images that represent purely transient ...
MongoDB Many-to-Many Association
...use them.
For the case of the User in Roles model, the operations that stretch our atomic write avoidance of locks is adding or removing a User from a Role. In either case, a successful operation results in both a single User and a single Role document being updated. If something fails, it is eas...
OAuth 2.0: Benefits and use cases — why?
...oint of the OAuth specs is for a content provider (e.g. Facebook, Twitter, etc.) to assure a server (e.g. a Web app that wishes to talk to the content provider on behalf of the client) that the client has some identity. What three-legged authentication offers is the ability to do that without the cl...
How does the compilation/linking process work?
...nd I have deliberately not used the jargon of object files, symbol tables, etc. which to me is part of the confusion.
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Which is more preferable to use: lambda functions or nested functions ('def')?
..."very rare", it is common for key functions to sorted or itertools.groupby etc., e.g. sorted(['a1', 'b0'], key= lambda x: int(x[1]))
– Chris_Rands
Apr 9 '18 at 12:09
add a com...