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How do I execute any command editing its file (argument) “in place” using bash?
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@patryk.beza: In order: The input FD is opened from the original file; the original directory entry is deleted; the redirection is processed, creating a new empty file with the same name the old one used to have; then the command runs.
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JPA: what is the proper pattern for iterating over large result sets?
... not safe if there are new inserts during the batch process. The user must order based on a column where it is sure that newly inserted data will be on the end of the result list.
– Balazs Zsoldos
Nov 15 '12 at 15:22
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Solving “The ObjectContext instance has been disposed and can no longer be used for operations that
...inherited from this entity and provide DbContext instance to this proxy in order to allow lazy loading of membership later:
public class MemberLoanProxy : MemberLoan
{
private CosisEntities db;
private int membershipId;
private Membership membership;
public override Membership Memb...
Remap values in pandas column with a dict
...ertainly not the most elegant, but this answer deserves some credit. It is orders of magnitude faster for large dictionaries and doesn't use up all of my RAM. It remapped a 10,000 line file using a dictionary that had about 9 million entries in half a minute. The df.replace function, while tidy and ...
How to open the Chrome Developer Tools in a new window?
...lick and hold the button next to the close button of the Developer Tool in order to reveal the "Undock into separate window" option.
Note: A "press" is not enough in that state.
share
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improve t...
JPA EntityManager: Why use persist() over merge()?
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Thus there is no possibility to change operation order for orphanremoval=true?
– gstackoverflow
Sep 14 '17 at 16:09
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Among $_REQUEST, $_GET and $_POST which one is the fastest?
...$_POST and $_COOKIE.
But it's only a default, which depends on variables_order ; and not sure you want to work with cookies.
If I had to choose, I would probably not use $_REQUEST, and I would choose $_GET or $_POST -- depending on what my application should do (i.e. one or the other, but not bot...
What is an idempotent operation?
... information, you can PUT the new information as many times as it takes in order to get confirmation from the web service. PUT-ing it a thousand times is the same as PUT-ing it once. Similarly DELETE-ing a REST resource a thousand times is the same as deleting it once. Idempotence thus makes it a...
Fastest way to iterate over all the chars in a String
...s are done 1,000 times per string size
The tests are shuffled into random order each time. In other words, the tests are done in random order every time they are done, over 1000 times over.
The entire test suite is done forwards, and backwards, to show the effect of JVM warmup on optimization and ...
What does it mean when a CSS rule is grayed out in Chrome's element inspector?
...erties from rules that are directly applicable to the selected element. In order to additionally display inherited properties, enable the Show inherited checkbox. Such properties will be displayed in a dimmed font.
Live example: inspect the element containing the text "Hello, world!"
div { ...