It seems many users are having issues with this. Here are some fixes: Right click on your task > “Properties” > “Actions” > “Edit” | Put ONLY the file name under ‘Program/Script’, no quotes and ONLY the directory under ‘Start in’ as described, again no quotes. Right click on your task > “Properties” > “General” … Read more
A temporary table can have 3 kinds, the # is the most used. This is a temp table that only exists in the current session. An equivalent of this is @, a declared table variable. This has a little less “functions” (like indexes etc) and is also only used for the current session. The ## is one that is the … Read more
I am trying to install openstack using devstack on ubuntu 16.04. I followed the following link. https://docs.openstack.org/developer/devstack/guides/single-machine.html When I run sudo openstack service list , it prompt the following error. Missing value auth-url required for auth plugin password
TCP Tahoe and Reno are two forms of handling TCP congestion controls specifically when it comes to receiving 3 duplicate acks. Tahoe: handles 3 duplicate acks similar (exactly?) to receiving a timeout. It first performs a fast retransmit. Then, it halves the ssthresh value to original congestion window size, and sets the new window size … Read more
The following command deletes all your stashes: From the git documentation: clear Remove all the stashed states. IMPORTANT WARNING: Those states will then be subject to pruning, and may be impossible to recover (…).
For people new to functional programming map may be one of the first concepts that they struggle with. map is a function that takes two parameters: a function and a list of elements. The type signature of map is (a -> b) -> [a] -> [b]. The (a -> b) part is the function you pass to map, we will call it f. f takes one value and … Read more
Execute is sql*plus syntax .. try wrapping your call in begin .. end like this: (Although Jeffrey says this doesn’t work in APEX .. but you’re trying to get this to run in SQLDeveloper .. try the ‘Run’ menu there.)
In Java it’s called varargs, and the syntax looks like a regular parameter, but with an ellipsis (“…”) after the type: The vararg parameter must always be the last parameter in the method signature, and is accessed as if you received an array of that type (e.g. Object[] in this case).
Android follows normal java package conventions plus here is an important snippet of text to read (this is important regarding the wide use of xml files while developing on android). The reason for having it in reverse order is to do with the layout on the storage media. If you consider each period (‘.’) in … Read more
The best way to think about this is by looking at what happens on a row-by-row basis. Setting up some input data, we have: (I’m using a third element for the second row to make things more interesting). If we just select from it, we get output that looks like this: Now let’s talk about … Read more