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Calling Java from Python
...thods from your python code as if they were python methods:
from py4j.java_gateway import JavaGateway
gateway = JavaGateway() # connect to the JVM
java_object = gateway.jvm.mypackage.MyClass() # invoke constructor
other_object = java_object.doThat()
other_object.doThis(1,'ab...
How to read multiple text files into a single RDD?
...n get a Buffer/List of S3 Paths :
import scala.collection.JavaConverters._
import java.util.ArrayList
import com.amazonaws.services.s3.AmazonS3Client
import com.amazonaws.services.s3.model.ObjectListing
import com.amazonaws.services.s3.model.S3ObjectSummary
import com.amazonaws.services.s3.model.L...
How do I get the type of a variable?
...her in code with something like gcc.gnu.org/onlinedocs/libstdc++/manual/ext_demangling.html, with command line utilities such as c++filt, or with any of various online demanglers such as demangler.com.
– cincodenada
Dec 11 '18 at 19:14
...
Form inside a form, is that alright? [duplicate]
...t" name="foo" form="saveForm" />
<input type="hidden" value="some_id" form="deleteForm" />
<input type="text" name="foo2" id="foo2" form="saveForm" value="success" />
<input type="submit" name="save" value="Save" form="saveForm" onclick="alert(document.getElementById('...
How can I check if a file exists in Perl?
...mething exists at given path using the -e file-test operator.
print "$base_path exists!\n" if -e $base_path;
However, this test is probably broader than you intend. The code above will generate output if a plain file exists at that path, but it will also fire for a directory, a named pipe, a syml...
How to trim a file extension from a String in JavaScript?
...ould be any file name (Let's assume the file name only contains [a-zA-Z0-9-_] to simplify.).
23 Answers
...
Allowed memory size of 33554432 bytes exhausted (tried to allocate 43148176 bytes) in php
...Just add this line before the line where you get error in your php file
ini_set('memory_limit', '-1');
It will take unlimited memory usage of server, it's working fine.
Consider '44M' instead of '-1' for safe memory usage.
s...
What's the difference between MyISAM and InnoDB? [duplicate]
...e differences between InnoDB and MyISAM. But yes, InnoDB behavior with AUTO_INCREMENT is a difference, and one that we have to account for if we are going to use AUTO_INCREMENT, and if we are dependent on some behavior that isn't supported. This difference could be considered a disadvantage; perhaps...
In Rails, how do you render JSON using a view?
...
You should be able to do something like this in your respond_to block:
respond_to do |format|
format.json
render :partial => "users/show.json"
end
which will render the template in app/views/users/_show.json.erb.
...
how to read System environment variable in Spring applicationContext
...use
<util:properties id="dbProperties"
location="classpath:config_#{systemProperties['env']}/db.properties" />
Combined with java ... -Denv=QA should solve your problem.
Note also a comment by @yiling:
In order to access system environment variable, that is OS level
variables a...