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How do I get java logging output to appear on a single line?
...rd) {
StringBuilder sb = new StringBuilder();
// Minimize memory allocations here.
dat.setTime(record.getMillis());
args[0] = dat;
// Date and time
StringBuffer text = new StringBuffer();
if (formatter == null) {
formatter = new MessageFormat(format);
}...
How to round a number to n decimal places in Java
...ing. I'm surprised Chris Cudmore would even say what he said to be honest. allocating objects is always more expensive than casting primitives and using static methods (Math.round() as opposed to decimalFormat.format()).
– Andi Jay
Jul 10 '12 at 14:35
...
initializing a boolean array in java
...
The array will be initialized to false when you allocate it.
All arrays in Java are initialized to the default value for the type. This means that arrays of ints are initialised to 0, arrays of booleans are initialised to false and arrays of reference types are initialise...
UITableView with fixed section headers
...
Change your TableView Style:
self.tableview = [[UITableView alloc] initwithFrame:frame
style:UITableViewStyleGrouped];
As per apple documentation for UITableView:
UITableViewStylePlain- A plain table view. Any section headers or
footers are displayed as inline separators an...
How to disable/enable the sleep mode programmatically in iOS?
...nd of a countdown but it will go into 'sleep mode' whenever it reaches the allocated time to sleep.
4 Answers
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How to know what the 'errno' means?
...LOCK Resource temporarily unavailable
12 ENOMEM Cannot allocate memory
13 EACCES Permission denied
14 EFAULT Bad address
15 ENOTBLK Block device required
16 EBUSY Device or resource busy
17 EEXIST File exists
...
An efficient way to transpose a file in Bash
... rs -c' ' -C' ' -T < rows.seq > cols.seq gives rs: no memory: Cannot allocate memory. This is a system running FreeBSD 11.0-RELEASE with 32 GB of ram. So, my guess is that rs puts everything in RAM, which is good for speed, but not for large data.
– jrm
...
What is the difference between a mutable and immutable string in C#?
...y instance of StringBuilder :
var address = new StringBuilder(500);
It allocate memory chunk of size 500 bytes for this instance and all operation just modify this memory location and this memory not shared with any other object. And that is the reason why StringBuilder is MUTABLE.
I hope it wi...
How to find a min/max with Ruby
...
Punctuation isn't the problem here. An entire heap allocation to get the max of a few values is the underlying ugliness here.
– kdbanman
Mar 7 '15 at 21:37
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How to pass an ArrayList to a varargs method parameter?
...tions.size()]))
(toArray(new WorldLocation[0]) also works, but you would allocate a zero length array for no reason.)
Here's a complete example:
public static void method(String... strs) {
for (String s : strs)
System.out.println(s);
}
...
List<String> strs = new ArrayLi...