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How to get process ID of background process?
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... which hoses you if foo happens to be multiple piped commands (eg. tail -f somefile.txt | grep sometext). In such cases, you will get the PID of the grep command from $! rather than the tail command if that's what you were looking for. You wi...
Disable a group of tests in rspec?
...o I have to decide what to use again later), and is just as easily removed if the decision is made or blocker is removed.
This works the same for groups and individual examples.
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How to include “zero” / “0” results in COUNT aggregate?
...e function count() will not count NULL values and thus you'll get a zero.
If you want to learn more about outer joins, here is a nice tutorial: http://sqlzoo.net/wiki/Using_Null
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Android multiple email attachments using Intent
... be "text/plain" and not "plain/text": emailIntent.setType("text/plain");. If you use "plain/text" Android will force to use GMail as a sender, but if you use "text/plain" it will provide application chooser dialog with Gmail, Facebook, Bluetooth etc. If you would like to propose only mail programs ...
Javascript: formatting a rounded number to N decimals
... that is a display problem. A number doesn't contain information about significant digits; the value 2 is the same as 2.0000000000000. It's when you turn the rounded value into a string that you have make it display a certain number of digits.
You could just add zeroes after the number, something l...
How do I get Month and Date of JavaScript in 2 digit format?
... @KasperHoldum–getMonth and getDate return numbers, not strings. And if compatibility with Strings is required, then '0' + Number(n) will do the job.
– RobG
Jul 23 '12 at 0:16
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How to revert a “git rm -r .”?
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git reset HEAD
Should do it. If you don't have any uncommitted changes that you care about, then
git reset --hard HEAD
should forcibly reset everything to your last commit. If you do have uncommitted changes, but the first command doesn't work, then s...
Why extend the Android Application class?
...ither preferable to another approach or necessary to accomplish something. If you have an expensive, frequently used object you can initialize it in an IntentService when you detect that the object isn't currently present. Application itself runs on the UI thread, while IntentService runs on its own...
Font size of TextView in Android application changes on changing font size from native settings
I want to specify my own text size in my application, but I am having a problem doing this.
14 Answers
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Get type of all variables
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Get worked perfectly. Do you know if there is any performance penalty if get() is used to find the type of several large data frames which may be present in the variable list returned by objects()?
– user1625066
Oct 2 '1...