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Draw a perfect circle from user's touch
...e, lines, etc, whatever came to his mind).
Then he started to draw circles and then he asked me to make it "good circle" (from my understanding: make the drawn circle perfectly round, as we know
no matter how stable we try to draw something with our finger on the screen, a circle is never really as...
Eclipse java debugging: source not found
...ikely need to change the build path of the project to avoid using this jar and have the JVM use the project instead.
EDIT: Note that as of 2018 it is common to use a build framework like Maven, where the build path is managed by the m2e plugin so this problem should be very less frequent than when...
How do I speed up the gwt compiler?
We're starting to make heavier use of GWT in our projects, and the performance of the GWT compiler is becoming increasingly annoying.
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Javascript switch vs. if…else if…else
...le states that there is a negligible performance difference between switch and if/then statements in JS. The article states this is due to spotty switch optimization and the different ways different JS engines function. Quote: Since most JavaScript engines don’t have such optimizations, performanc...
Android: AsyncTask vs Service
Why do I read in the answer to most questions here a lot about AsyncTask and Loaders but nothing about Services ? Are Services just not known very well or are they deprecated or have some bad attributes or something? What are the differences?
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Vertically align text to top within a UILabel
...y labels orange so you can see clearly what's happening.
Here's the quick and easy way to do this:
[myLabel sizeToFit];
If you have a label with longer text that will make more than one line, set numberOfLines to 0 (zero here means an unlimited number of lines).
myLabel.numberOfLine...
How to sparsely checkout only one single file from a git repository?
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Originally, I mentioned in 2012 git archive (see Jared Forsyth's answer and Robert Knight's answer), since git1.7.9.5 (March 2012), Paul Brannan's answer:
git archive --format=tar --remote=origin HEAD:path/to/directory -- filename | tar -O -xf -
But: in 2013, that was no longer possible for re...
Is it fine to have foreign key as primary key?
...n to this are tables with a one-to-one relationship, where the foreign key and primary key of the linked table are one and the same.
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Logical operator in a handlebars.js {{#if}} conditional
Is there a way in handlebars JS to incorporate logical operators into the standard handlebars.js conditional operator? Something like this:
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Can I multiply strings in Java to repeat sequences? [duplicate]
...tion]).replace("\0", "-")
Replace generation with number of repetitions, and the "-" with the string (or char) you want repeated.
All this does is create an empty string containing n number of 0x00 characters, and the built-in String#replace method does the rest.
Here's a sample to copy and past...