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typeof !== “undefined” vs. != null
...have been declared before:
if(typeof neverDeclared === "undefined") // no errors
if(neverDeclared === null) // throws ReferenceError: neverDeclared is not defined
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Android Studio 0.4 Duplicate files copied in APK META-INF/LICENSE.txt
... following code to project/app/build.gradle:
android {
// Fixed build error : Duplicate files copied in APK META-INF/xxx
packagingOptions {
exclude 'META-INF/DEPENDENCIES'
exclude 'META-INF/NOTICE'
exclude 'META-INF/LICENSE'
exclude 'META-INF/NOTICE.txt'
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How to launch an Activity from another Application in Android
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I get this error when i try from instant app: Not allowed to start activity Intent
– Mahdi
Jan 2 '18 at 13:05
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Unknown provider: $modalProvider
I keep receiving this error as I'm trying to implement bootstrap Modal window. What could be the cause of it? I've copy/pasted everything from http://angular-ui.github.io/bootstrap/#/modal here.
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variable === undefined vs. typeof variable === “undefined”
...undefined", whereas the identity check foo === undefined would trigger the error "foo is not defined".
For local variables (which you know are declared somewhere), no such error would occur, hence the identity check.
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How to install a gem or update RubyGems if it fails with a permissions error
...em or update RubyGems using gem update --system , and it fails with this error:
27 Answers
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QuotaExceededError: Dom exception 22: An attempt was made to add something to storage that exceeded
Using LocalStorage on iPhone with iOS 7 throws this error. I've been looking around for a resolvant, but considering I'm not even browsing in private, nothing is relevant.
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Add a new column to existing table in a migration
...ger('paid'); }); into it. And run "php artisan migrate", but getting Fatal error: Cannot redeclare class Users in /Applications/XAMPP/xamppfiles/htdocs/adsense/application/migrations/2013_05_28_122527_users.php on line 3
– kim larsen
May 28 '13 at 12:43
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How to send a command to all panes in tmux?
I like to call :clear-history on panes with a huge scrollback. However, I want to script a way to send this command to all the panes in the various windows.
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Check if bash variable equals 0 [duplicate]
...ro), but it requires two arguments. That is why you get the unary operator error message.
EDIT: As Doktor J mentioned in his comment to this answer, a safe way to avoid problems with unset variables in checks is to enclose the variables in "". See his comment for the explanation.
if [ "$depth" -e...