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SQL, Postgres OIDs, What are they and why are they useful?
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OIDs basically give you a built-in id for every row, contained in a system column (as opposed to a user-space column). That's handy for tables where you don't have a primary key, have duplicate rows, etc. For example, if you have a t...
Hidden features of Windows batch files
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Line continuation:
call C:\WINDOWS\system32\ntbackup.exe ^
backup ^
/V:yes ^
/R:no ^
/RS:no ^
/HC:off ^
/M normal ^
/L:s ^
@daily.bks ^
/F daily.bkf
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How do I hide an element when printing a web page?
...You can even have multiple screen sections for different resolutions. Basically if you just add what's given in this answer, it will not work. Believe me I've tried. So how did this get 69 upvotes?
– Codeguy007
Nov 16 '12 at 21:39
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I lost my .keystore file?
...ed. So, there is no other way: you should issue another application.
Generally, the only advise that exists on keystores: "always back it up!"
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What does value & 0xff do in Java?
... that notation? x isn't a number or a hex number?
– Callat
Dec 5 '16 at 18:56
3
@KazRodgers - The...
How to add extra info to copied web text
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2020 Update
Solution that works on all recent browsers.
document.addEventListener('copy', (event) => {
const pagelink = `\n\nRead more at: ${document.location.href}`;
event.clipboardData.setData('text', document.getSelection() + pagelink);
eve...
Warning - Build path specifies execution environment J2SE-1.4
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All not working. Whenever you do [Alt][F5] to update maven config all such manual tweaks get lots and the warning comes back. See bugs.eclipse.org/bugs/show_bug.cgi?id=376619
– Jörg
Oct...
How to replace case-insensitive literal substrings in Java
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String target = "FOOBar";
target = target.replaceAll("(?i)foo", "");
System.out.println(target);
Output:
Bar
It's worth mentioning that replaceAll treats the first argument as a regex pattern, which can cause unexpected results. To solve this, also use Pattern.quote as...
PostgreSQL - fetch the row which has the Max value for a column
I'm dealing with a Postgres table (called "lives") that contains records with columns for time_stamp, usr_id, transaction_id, and lives_remaining. I need a query that will give me the most recent lives_remaining total for each usr_id
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Visual Studio Clicking Find Results Opens Code in Wrong Window
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Thanks. Works in VS2015 also
– RandallTo
Nov 24 '15 at 17:29
This solution usually fixes it for me q...