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Getting a slice of keys from a map
...fference, but it's not much more work, and in my tests (using a map with 1,000,000 random int64 keys and then generating the array of keys ten times with each method), it was about 20% faster to assign members of the array directly than to use append.
Although setting the capacity eliminates reallo...
Add line break to ::after or ::before pseudo-element content
...t/XkNxs/
When escaping arbitrary strings, however, it's advisable to use \00000a instead of \A, because any number or [a-f] character followed by the new line may give unpredictable results:
function addTextToStyle(id, text) {
return `#${id}::after { content: "${text.replace(/"/g, '\\"').replace...
How many files can I put in a directory?
... number of files per directory: ~1.3 × 1020 (performance issues past 10,000)
Maximum file size
16 GiB (block size of 1 KiB)
256 GiB (block size of 2 KiB)
2 TiB (block size of 4 KiB)
2 TiB (block size of 8 KiB)
Maximum volume size
4 TiB (block size of 1 KiB)
8 TiB (block size of 2...
Print a file, skipping the first X lines, in Bash [duplicate]
I have a very long file which I want to print, skipping the first 1,000,000 lines, for example.
13 Answers
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Add leading zeroes/0's to existing Excel values to certain length
...
=TEXT(A1,"0000")
However the TEXT function is able to do other fancy stuff like date formating, aswell.
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How can I format a String number to have commas and round?
...rts different locales (eg: in some countries that would get formatted as 1.000.500.000,57 instead).
You also need to convert that string into a number, this can be done with:
double amount = Double.parseDouble(number);
Code sample:
String number = "1000500000.574";
double amount = Double.parseD...
Table fixed header and scrollable body
...d them) */
.tableFixHead,
.tableFixHead td {
box-shadow: inset 1px -1px #000;
}
.tableFixHead th {
box-shadow: inset 1px 1px #000, 0 1px #000;
}
.tableFixHead { overflow-y: auto; height: 100px; }
.tableFixHead thead th { position: sticky; top: 0; }
/* Just common table stuff. ...
Way to get number of digits in an int?
... be flawed too i am no benchmark expert). Over a large number of runs (100 000 000), the speed is 11s to 8s on my machine hardly twice as fast.
– Jean
Aug 20 '09 at 15:36
5
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Java Equivalent of C# async/await?
...usFileChannel.open(path);
ByteBuffer buffer = ByteBuffer.allocate(100_000);
await channel.read(buffer, 0, buffer, this);
return buffer.get(0);
}
Then I would imagine the compiler will transform the original async/await code into something like this:
public static Future<Byte> r...
Best way to parseDouble with comma as decimal separator?
... where a comma denotes a decimal place? You could pass in, for example "1,000,000" which wouldn't parse into German Locale and would then be replaced by "1.000.000" which is not a valid Double.
– Eddie Curtis
Jan 27 '15 at 17:01
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