After attempt to add Firebase client library com.google.gms:google-services:4.3.2 into root level Gradle config build.grade, I caught error during Android Studio syncing:
Caused by: org.gradle.internal.event.ListenerNotificationException: Failed to notify project evaluation listener.
at org.gradle.internal.event.AbstractBroadcastDispatch.dispatch(AbstractBroadcastDispatch.java:86)
... 85 more
Caused by: java.lang.NoSuchFieldError: JAVA_LETTER_OR_DIGIT
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Author: dev
httpcomponents:httpcore ThreadSafe class not found solution
@ThreadSafe class not found compilation error occurs after updating your org.apache.httpcomponents:httpcore dependency version to 4.4.11 or above.
This httpcore version comes with:
-
Class org.apache.http.annotation.Immutable removed
Class org.apache.http.annotation.NotThreadSafe removed
Class org.apache.http.annotation.ThreadSafe removed
…
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Java: local and remote JVM debugging — JDK 8, 9 and later
There is no need to tell about importance of JVM debugging some feature at development, test or sometimes even at production environment.
The Java Debug Wire Protocol (JDWP) and java agent library included into JDK provides the ability to debug java applications.
Continue reading “Java: local and remote JVM debugging — JDK 8, 9 and later”
Moving files from nested directories with Unix CLI
The following command flattens current subdirectories moving all files from them to the targetDirectory, keeping directories unchanged
find ./ -type f -mindepth 2 -exec mv -t targetDirectory {} +
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How to install Homebrew (brew) on OS X El Capitan 10.11
Homebrew or simply brew is a package manager which helps install and manage lots of Unix tools and software on your OS X.
It doesn’t come with OS X El Capitan, but it can be installed manually.
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How to predict_proba with LinearSVC
Once I had a problem where I have to give the best solution according to Area under the curve (AUC or AUROC) score. I had hundreds of features and my training set was about 100.000 of objects. It was a classification problem. I had tried gradient boosting, logistic regression, random forests and then I decided to try SVM and LinearSVC. Continue reading “How to predict_proba with LinearSVC”
How to fix Unsupported major.minor version 52.0 in Java
java.lang.UnsupportedClassVersionError: Test : Unsupported major.minor version 52.0 and similar exceptions occur when the JDK version, more specifically javac version, the code is compiled with is newer then JVM used for running it.
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Where is MySQL database stored
All MySQL databases are stored in corresponding directories inside a MySQL DATADIR directory, which is specified in a configuration. E.g. myExampleDB’s files would be stored inside ‘$DATADIR/myExampleDB’ directory.
If you want to get MySQL datadir location and you have access to MySQL you can simply execute the following SQL query: Continue reading “Where is MySQL database stored”