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Best way to convert an ArrayList to a string
...ing concatenation but you will be creating a new StringBuilder object each time the loop is executed.
– Pedro Henriques
Mar 1 '09 at 3:43
4
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MySQL, better to insert NULL or empty string?
... that I'm saying YOU need to define how you want them to be different. Sometimes it makes sense to have them different, sometimes it doesn't. If not, just pick one and stick with it. Like I said, I tend to favor the NULL most of the time.
Oh, and bear in mind that if the column is null, the record ...
random.seed(): What does it do?
...alue is the previous number generated by the generator. However, the first time you use the generator, there is no previous value.
Seeding a pseudo-random number generator gives it its first "previous" value. Each seed value will correspond to a sequence of generated values for a given random numbe...
Why are variables “i” and “j” used for counters?
...ns numbers. Assuming that the summation notation arose at around the same time, the German-based notation would be expected—and the German word for index is Index, which also begins with an i. And I can't think of many letters which are particularly hard to write on a chalkboard. Well, except ...
DateTime.ToString() format that can be used in a filename or extension?
I want to add a timestamp to filenames as files are created but most of the DateTime methods I've tried output something with spaces and slashes. For instance:
...
What's the difference between a Future and a Promise?
...nd, the result of a promise can be set by "you" (or in fact by anybody) anytime because it has a public setter method. Both CompletableFuture and SettableFuture can be created without any task, and their value can be set at any time. You send a promise to the client code, and fulfill it later as you...
What are the typical reasons Javascript developed on Firefox fails on IE? [closed]
...or many operations. Be aware that IE8 in standards compliance mode is many times slower and has many more glitches than when in quirks mode when using VML.
SVG: IE9 supports SVG natively. IE6-8 can support SVG, but only with external plugins with only some of those plugins supporting JavaScript mani...
How to translate between Windows and IANA time zones?
As described in the timezone tag wiki , there are two different styles of time zones.
2 Answers
...
Looping through the content of a file in Bash
...
Option 1a: While loop: Single line at a time: Input redirection
#!/bin/bash
filename='peptides.txt'
echo Start
while read p; do
echo $p
done < $filename
Option 1b: While loop: Single line at a time:
Open the file, read from a file descriptor (in this c...
Can You Get A Users Local LAN IP Address Via JavaScript?
...re is another way of achieving this in IE then I'm not aware of it at this time.
– John
Jun 3 '18 at 13:06
@John - how...