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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 ...
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 ...
Get top 1 row of each group
... I could upvote more than once. I have returned to this answer about 7.000 times already. There might come a day, when I take the time to understand this, so I wouldn't have to come back. But it is not this day.
– mpn275
Sep 9 at 9:56
...
Looping through the content of a file in Bash
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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...
Git push branch from one remote to another?
... single-quotes until an edit about 1 year prior to your comment. So at the time this answer was written it was actually different in a rather relevant way.
– 0xC0000022L
Sep 15 at 12:44
...
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...
Java compile speed vs Scala compile speed
...ing in Scala for a while and I like it but one thing I'm annoyed by is the time it takes to compile programs. It's seems like a small thing but with Java I could make small changes to my program, click the run button in netbeans, and BOOM, it's running, and over time compiling in scala seems to con...
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...
Take a char input from the Scanner
...
You can solve this problem, of "grabbing keyboard input one char at a time" very simply. Without having to use a Scanner all and also not clearing the input buffer as a side effect, by using this.
char c = (char)System.in.read();
If all you need is the same functionality as the C language "...
When maven says “resolution will not be reattempted until the update interval of MyRepo has elapsed”
...corresponding failed to download artifact directory in my local repo. Next time I run the maven command the artifact download is triggered again. Therefore I'd say it's a client side setting.
Nexus side (server repo side), this issue is solved configuring a scheduled task.
Client side, this is don...