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How do servlets work? Instantiation, sessions, shared variables and multithreading
...ervlets. For information passing among those servlets I am setting session and instance variables.
8 Answers
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What's the best way to send a signal to all members of a process group?
...se if the tree is the result of forking from a server start or a shell command line.) You can discover process groups using GNU ps as follows:
ps x -o "%p %r %y %x %c "
If it is a process group you want to kill, just use the kill(1) command but instead of giving it a process number, give it th...
Is there a way to iterate over a slice in reverse in Go?
... The effective go page an example, but this one is actually a bit nicer and declares fewer variables.
– Kevin Cantwell
Dec 5 '13 at 21:07
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Is there any way to kill a Thread?
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It is generally a bad pattern to kill a thread abruptly, in Python and in any language. Think of the following cases:
the thread is holding a critical resource that must be closed properly
the thread has created several other threads that must be killed as well.
The nice way of handling ...
How does autowiring work in Spring?
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First, and most important - all Spring beans are managed - they "live" inside a container, called "application context".
Second, each application has an entry point to that context. Web applications have a Servlet, JSF uses a el-re...
How to apply a function to two columns of Pandas dataframe
Suppose I have a df which has columns of 'ID', 'col_1', 'col_2' . And I define a function :
12 Answers
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How to lay out Views in RelativeLayout programmatically?
...rt from setting the ids of a childview, adding childview to the parentview and calling requestLayout() on childview before setting the rules of the other childview made things work. Hope this helps someone
– 2cupsOfTech
Aug 26 '15 at 16:46
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Advantages and disadvantages of GUID / UUID database keys
...es, but there's always a bit of uncertainty, especially around performance and un-read-out-over-the-phone-able URLs.
9 Answ...
Multiline TextView in Android?
...text you're putting in the TextView is short, it will not automatically expand to four lines. If you want the TextView to always have four lines regardless of the length of the text in it, set the android:lines attribute:
<TextView
android:id="@+id/address1"
android:gravity="left"
an...
How to return a file using Web API?
...t, because as soon as the variable goes out of scope, .NET will dispose it and you'll get error messages about the underlying connection being closed.
– Brandon Montgomery
Sep 26 '12 at 21:44
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