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How to convert a byte array to a hex string in Java?
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Reusing a library by including an extra JAR files of several dozens kB would not exactly be efficient if all you need is this function (on some platforms like Android, the whole Jar gets included in the end application). And sometimes shorter and more clear code is bet...
How to check an Android device is HDPI screen or MDPI screen?
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type="bool"
name="is_xxhdpi">[bool]</item>
to 4 values.xml files, put these under corresponding res/values-[xxx]/ folders.
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follo...
Android set height and width of Custom view programmatically
...the layout where the graphView is placed. For example if in the XML layout file graphView is placed inside RelativeLayout, then you should use new RelativeLayout.LayoutParams(width, height)
– Vic
Feb 10 '19 at 14:51
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How do I run Asynchronous callbacks in Playground
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Swift 3, xcode 8, iOS 10
Notes:
Tell the compiler that the playground file requires "indefinite execution"
Manually terminate execution via a call to PlaygroundSupport.current.completeExecution() within your completion handler.
You may run into problems with the cache directory and to resolve...
Why does Stream not implement Iterable?
...ows IllegalStateException. (openjdk.java.net/projects/nio/javadoc/java/nio/file/…)
– roim
Nov 21 '13 at 20:01
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How to set default values in Rails?
...efault value for that column on that table, setting them in a DB migration file is the easiest way:
class SetDefault < ActiveRecord::Migration
def self.up
change_column :people, :last_name, :type, :default => "Doe"
end
def self.down
# You can't currently remove default values i...
Is there a foreach in MATLAB? If so, how does it behave if the underlying data changes?
...k Java-like code should be your first choice way to work with Matlab in .m files.
– bobobobo
Oct 22 '12 at 21:59
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How does one escape backslashes and forward slashes in VIM find/search?
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This comes in handy when replacing \ into / in a file with lots of Windows-style paths. Thanks.
– Isaac Nequittepas
Jun 29 '12 at 18:16
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S3 Error: The difference between the request time and the current time is too large
...t recognized as an internal or external command, operable program or batch file.
– st78
May 4 '17 at 5:57
1
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How do you test that a Python function throws an exception?
...raises-error/
First, here is the corresponding (still dum :p) function in file dum_function.py :
def square_value(a):
"""
Returns the square value of a.
"""
try:
out = a*a
except TypeError:
raise TypeError("Input should be a string:")
return out
Here is the test ...