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How to find a deleted file in the project commit history?
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It's in the commit with that sha as "deleted" which means it still won't exist. You have to go to the commit before that to actually get it back.
– tandrewnichols
Sep 11 '13 at 14:07
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What is the meaning of the term arena in relation to memory?
...eavy use of the word arena , but never defines it. I've searched for the meaning of the word and how it relates to memory, and found nothing. Here are a few contexts in which the author uses the term:
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Linq code to select one item
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Perhaps you mean Where as opposed to Select, which has already been stated, but this answer is incorrect. Select in c# changes the results to IEnumerable<bool>, so you're getting a bool for the first item x.Id == 123
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Java string to date conversion
...relevance from the javadoc, listing all available format patterns:
Symbol Meaning Presentation Examples
------ -------------------------- ------------ ----------------------------------------------
G era text AD; Anno Domini; A
u ...
How do you post to an iframe?
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Depends what you mean by "post data". You can use the HTML target="" attribute on a <form /> tag, so it could be as simple as:
<form action="do_stuff.aspx" method="post" target="my_iframe">
<input type="submit" value="Do Stu...
Make a link use POST instead of GET
...click the link it will perform a postback using JavaScript". This has more meaning than binding a click event. Hard rules like "dont ever use javascript in href" are as bad as any other bad practice.
– Menol
Oct 31 '19 at 10:47
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How to highlight text using javascript
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@julmot; To 1: Which means you need to iterate through every element, which is precisely what I do. Unless you don't care about loosing formatting, in which case you can search in document.body.innerText, which will be quite slow. 3. Not in the D...
'IF' in 'SELECT' statement - choose output value based on column values
..., IFNULL(amount,0) * -1) as amount
FROM report
The part IFNULL(amount,0) means when amount is not null return amount else return 0.
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How to efficiently build a tree from a flat structure?
...ps if x[1] == node]
}
For example:
# (child, parent) pairs where -1 means no parent
flat_tree = [
(1, -1),
(4, 1),
(10, 4),
(11, 4),
(16, 11),
(17, 11),
(24, 17),
(25, 17),
(5, 1),
(8, 5),
(9, 5),
(7, 9),
(12, 9),
(22, ...
How do I UPDATE from a SELECT in SQL Server?
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This will tend to work across almost all DBMS which means learn once, execute everywhere. If that is more important to you than performance you might prefer this answer, especially if your update is a one off to correct some data.
– Alan Macdonald
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