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Getting a random value from a JavaScript array
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It is a simple one-liner
const randomElement = array[Math.floor(Math.random() * array.length)];
Example
const months = ["January", "February", "March", "April", "May", "June", "July"];
const random = Math.floor(Math.ran...
WITH CHECK ADD CONSTRAINT followed by CHECK CONSTRAINT vs. ADD CONSTRAINT
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The first syntax is redundant - the WITH CHECK is default for new constraints, and the constraint is turned on by default as well.
This syntax is generated by the SQL management studio when generating sql scripts -- I'm assuming it's some sort of extra redundan...
How to list out all the subviews in a uiviewcontroller in iOS?
...ot all of the subviews are listed out, for instance, the subviews in the UITableViewCell are not found. Any idea?
22 Answ...
git diff two files on same branch, same commit
sorry if this question exists, I surprisingly could not find it :/
6 Answers
6
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How can I debug git/git-shell related problems?
How can I have some debug information regarding git/git-shell?
8 Answers
8
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NoClassDefFoundError: android.support.v7.internal.view.menu.MenuBuilder
There is an issue with the Android appcompat v7 library on Samsung devices running Android 4.2. I keep getting crashes with the following stack trace in my Developer Console:
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Pros and Cons of Interface constants [closed]
PHP interfaces allow the definition of constants in an interface, e.g.
2 Answers
2
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How to deal with INSTALL_PARSE_FAILED_INCONSISTENT_CERTIFICATES without uninstall?
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It means the new copy of your application (on your development machine) was signed with a different signing key than the old copy of your application (installed on the device/emulator). For example, if this is a device, you m...
How do I get only directories using Get-ChildItem?
...werShell versions less than 3.0:
The FileInfo object returned by Get-ChildItem has a "base" property, PSIsContainer. You want to select only those items.
Get-ChildItem -Recurse | ?{ $_.PSIsContainer }
If you want the raw string names of the directories, you can do
Get-ChildItem -Recurse | ?{ $_...
Arduino Sketch upload issue - avrdude: stk500_recv(): programmer is not responding
I have an Arduino Duemilanove with an ATmega328 . I am working on Ubuntu 12.04 (Precise Pangolin), and the Arduino IDE's version is 1.0. Recently, I tried to upload a few of the sample sketches onto it, such as the Blink one. However, none of my attempts are working and they result in the same e...