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Copying a HashMap in Java
...d structures, HashMap.putAll() will copy by reference, because it doesn't know how to exactly copy your object. For example:
import java.util.*;
class Playground {
public static void main(String[ ] args) {
Map<Integer, Map<Integer,List<Float>>> dataA = new HashMap<&...
@Resource vs @Autowired
...inject.Inject - use it, with a combination of @Qualifier. Note that spring now also supports the @javax.inject.Qualifier meta-annotation:
@Qualifier
@Retention(RUNTIME)
public @interface YourQualifier {}
So you can have
<bean class="com.pkg.SomeBean">
<qualifier type="YourQualifier"/...
LinearLayout not expanding inside a ScrollView
...elps. Thanks for that. But without this code sometimes works good. Do you know why?
– Ashokchakravarthi Nagarajan
Dec 29 '14 at 7:16
...
sys.argv[1] meaning in script
...like to note that previous answers made many assumptions about the user's knowledge. This answer attempts to answer the question at a more tutorial level.
For every invocation of Python, sys.argv is automatically a list of strings representing the arguments (as separated by spaces) on the command-l...
pandas three-way joining multiple dataframes on columns
...
This is decent advice and has now been incorporated into pandas merging 101 (see the section on merging multiple dataframes). It's worth noting that if your join keys are unique, using pd.concat will result in simpler syntax: pd.concat([df.set_index('name...
Debugging with command-line parameters in Visual Studio
...parently in VS2017 it's not called "Debugging", but "Debug". We may never know why.
– OmarL
Oct 16 '17 at 14:43
3
...
How to set commands output as a variable in a batch file
...ile name, you can use your double quotes without screwing up the command.
Now if your output will contain multiple lines, you can do this
SETLOCAL ENABLEDELAYEDEXPANSION
SET count=1
FOR /F "tokens=* USEBACKQ" %%F IN (`command`) DO (
SET var!count!=%%F
SET /a count=!count!+1
)
ECHO %var1%
ECHO ...
How to submit a form with JavaScript by clicking a link?
..."document.getElementById('form-id').submit();">submit</button>
Now, we come to the point at which you have to decide for the UI element which triggers the submit() call.
A button
<button>submit</button>
A link
<a href="#">submit</a>
Apply the aforementione...
From an array of objects, extract value of a property as array
...n for getting the value of a property in an object.
Additionally, _.map() now allows a string to be passed in as the second parameter, which is passed into _.property(). As a result, the following two lines are equivalent to the code sample above from pre-Lodash 4.
var result = _.map(objArray, 'fo...
How to comment a block in Eclipse?
...start/end tags will be removed! So when you try to undo the commenting you now have to insert the missing "/* */" tags. At least this is what i see using Juno under Linux. Test it out first!
– mohbandy
Oct 23 '13 at 15:24
...