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The current SynchronizationContext may not be used as a TaskScheduler

I am using Tasks to run long running server calls in my ViewModel and the results are marshalled back on Dispatcher using TaskScheduler.FromSyncronizationContext() . For example: ...
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What does the (unary) * operator do in this Ruby code?

...*[arg1, arg2, arg3] It can also be used in a different context, to catch all remaining method arguments in a method definition. In that case, it does not expand, but combine: def method2(*args) # args will hold Array of all arguments end Some more detailed information here. ...
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Best practices for circular shift (rotate) operations in C++

...,7 which is slower and takes more bytes than rol edi,7 on some CPUs (especially AMD, but also some Intel), when BMI2 isn't available for rorx eax,edi,25 to save a MOV. MSVC: x86-64 CL19: Only recognized for constant-count rotates. (The wikipedia idiom is recognized, but the branch and AND aren't op...
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How do I enable C++11 in gcc?

... program. Create a new file named Makefile (with a capital M). To automatically compile your code just type the make command in a terminal. You may have to install make. Here's a simple one : CXX=clang++ CXXFLAGS=-g -std=c++11 -Wall -pedantic BIN=prog SRC=$(wildcard *.cpp) OBJ=$(SRC:%.cpp=%.o) ...
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What is the best way to call a script from another script?

...s, methods, etc. I have another script which runs as a service. I want to call test1.py from the script running as a service. ...
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Forms authentication timeout vs sessionState timeout

...nger be authenticated—they will be redirected to the login page automatically. The slidingExpiration=true value is basically saying that as long as the user makes a request within the timeout value, they will continue to be authenticated (more details here). If you set slidingExpiration=false the ...
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How to define a custom ORDER BY order in mySQL

... MySQL has a handy function called FIELD() which is excellent for tasks like this. ORDER BY FIELD(Language,'ENU','JPN','DAN'), ID Note however, that It makes your SQL less portable, as other DBMSs might not have such function When your list of langua...
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Changing the color of the axis, ticks and labels for a plot in matplotlib

... As a quick example (using a slightly cleaner method than the potentially duplicate question): import matplotlib.pyplot as plt fig = plt.figure() ax = fig.add_subplot(111) ax.plot(range(10)) ax.set_xlabel('X-axis') ax.set_ylabel('Y-axis') ax.spines['bottom'].set_color('red') ax.spines['top...
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How do I use prepared statements in SQlite in Android?

... I use prepared statements in Android all the time, it's quite simple : SQLiteDatabase db = dbHelper.getWritableDatabase(); SQLiteStatement stmt = db.compileStatement("INSERT INTO Country (code) VALUES (?)"); stmt.bindString(1, "US"); stmt.executeInsert(); ...
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How do you make lettered lists using markdown?

Markdown allows ordered lists using numbers. How can I instead get an ordered list using letters ? i.e. 5 Answers ...