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Display image as grayscale using matplotlib
...If you want to display the inverse grayscale, switch the cmap to cmap='gray_r'.
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Limits of Nat type in Shapeless
...a> Nat(3)
res10: shapeless.Succ[shapeless.Succ[shapeless.Succ[shapeless._0]]] = Succ()
So to represent the number 1000000, you would have a type that is nested 1000000 levels deep, which would definitely blow up the scala compiler. The current limit seems to be about 400 from experimentation, b...
Cannot insert explicit value for identity column in table 'table' when IDENTITY_INSERT is set to OFF
...e like this so that you can specify your own identity values.
SET IDENTITY_INSERT Table1 ON
INSERT INTO Table1
/*Note the column list is REQUIRED here, not optional*/
(OperationID,
OpDescription,
FilterID)
VALUES (20,
'Hierachy Update',
...
Creating Multifield Indexes in Mongoose / MongoDB
...ommand can be used to create compound index for nested json:
db.ACCOUNT_collection.createIndex({"account.id":1,"account.customerId":1},{unique:1})
Mongo json structure is like :
{"_id":"648738"
"account": {
"id": "123",
"customerId": 7879,
"name": "test"
..
..
}
}
I hav...
You can't specify target table for update in FROM clause
... absolutely fine. DELETE FROM t WHERE tableID NOT IN (SELECT viewID FROM t_view); Also I recommend running OPTIMIZE TABLE t; afterwards to reduce the size of the table.
– CodeX
Oct 13 '16 at 11:36
...
Convert file path to a file URI?
...||
v == '+' || v == '/' || v == ':' || v == '.' || v == '-' || v == '_' || v == '~' ||
v > '\xFF')
{
uri.Append(v);
}
else if (v == Path.DirectorySeparatorChar || v == Path.AltDirectorySeparatorChar)
{
uri.Append('/');
}
else
{
uri.Append(...
Assign null to a SqlParameter
... for the ?: operator that explains the problem
Either the type of first_expression and second_expression must be the same, or an implicit conversion must exist from one type to the other.
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Android - border for button
...
Step 1 : Create file named : my_button_bg.xml
Step 2 : Place this file in res/drawables.xml
Step 3 : Insert below code
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rec...
How do I install and use curl on Windows?
...\Windows\System32"
Done
Even more easier:
Download the Win64 2000/XP x86_64 MSI installer provided by Edward LoPinto.
At the time of writing file curl-7.46.0-win64.exe was the most recent. Tested with Windows 10.
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Error “gnu/stubs-32.h: No such file or directory” while compiling Nachos source code
...e files in a non standard location. You'll also need to do:
export LIBRARY_PATH=/usr/lib/$(gcc -print-multiarch)
export C_INCLUDE_PATH=/usr/include/$(gcc -print-multiarch)
export CPLUS_INCLUDE_PATH=/usr/include/$(gcc -print-multiarch)
somewhere before you build (say in your .bashrc).
If you ar...