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Is Ruby pass by reference or by value?
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245
In traditional terminology, Ruby is strictly pass-by-value. But that's not really what you're ...
How do cache lines work?
... command triggers a read or write of a full cache line from memory. (DDR1/2/3/4 SDRAM burst transfer size is configurable up to 64B; CPUs will select the burst transfer size to match their cache line size, but 64B is common)
As a rule of thumb, if the processor can't forecast a memory access (and ...
What does immutable mean?
...t that str references.
If the string was mutable, does that
mean the 2nd alert() would return oo
as well?
Technically, no, because the substring method returns a new string. Making an object mutable, wouldn't change the method. Making it mutable means that technically, you could make it ...
Exit codes in Python
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234
What you're looking for in the script is calls to sys.exit(). The argument to that method is ...
How does the Windows Command Interpreter (CMD.EXE) parse scripts?
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201
We performed experiments to investigate the grammar of batch scripts. We also investigated dif...
Python to print out status bar and percentage
...rt progressbar
from time import sleep
bar = progressbar.ProgressBar(maxval=20, \
widgets=[progressbar.Bar('=', '[', ']'), ' ', progressbar.Percentage()])
bar.start()
for i in xrange(20):
bar.update(i+1)
sleep(0.1)
bar.finish()
To install it, you can use easy_install progressbar, or pip...
Adb Devices can't find my phone [closed]
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edited Mar 23 '18 at 2:54
Pang
8,2181717 gold badges7373 silver badges111111 bronze badges
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How can I add the new “Floating Action Button” between two widgets/layouts
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Best practice:
Add compile 'com.android.support:design:25.0.1' to gradle file
Use CoordinatorLayout as root view.
Add layout_anchorto the FAB and set it to the top view
Add layout_anchorGravity to the FAB and set it to: bottom|right|end
<android.support.design.widget.Coord...
pass **kwargs argument to another function with **kwargs
...3 arguments: filename, mode and a dictionary (kwargs). But Python expects: 2 formal arguments plus keyword arguments.
By prefixing the dictionary by '**' you unpack the dictionary kwargs to keywords arguments.
A dictionary (type dict) is a single variable containing key-value pairs.
"Keyword argu...