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How to prevent going back to the previous activity?
..., if you have HomeActivity -> IntermediateActivity -> FinalActivity, and you call finish() in the IntermediateActivity immediately after starting the FinalActivity you'll see the HomeActivity for a brief moment.
– David Murdoch
Dec 17 '15 at 18:08
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What's the difference between assignment operator and copy constructor?
I don't understand the difference between assignment constructor and copy constructor in C++. It is like this:
8 Answers
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How do I dynamically assign properties to an object in TypeScript?
... string]: any} = {};
LooseObject can accept fields with any string as key and any type as value.
obj.prop = "value";
obj.prop2 = 88;
The real elegance of this solution is that you can include typesafe fields in the interface.
interface MyType {
typesafeProp1?: number,
requiredProp1: string...
Best timestamp format for CSV/Excel?
...ile. I need to write timestamps that are accurate at least to the second, and preferably to the millisecond. What's the best format for timestamps in a CSV file such that they can be parsed accurately and unambiguously by Excel with minimal user intervention?
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What is the maximum value for an int32?
...correctly in the mirror. Otherwise you'll see 746,384,741,2 which is wrong and would be embarrassing.
– Larry S
Apr 21 '16 at 20:20
127
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How to drop all user tables?
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This worked very well and it doesn't require that I have authority on the Oracle server to delete and re-add my user. Bravo. Great answer.
– djangofan
May 11 '11 at 22:43
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Maximum and Minimum values for ints
I am looking for minimum and maximum values for integers in python. For eg., in Java, we have Integer.MIN_VALUE and Integer.MAX_VALUE . Is there something like this in python?
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How to call a function from a string stored in a variable?
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Also see my answer below if you are dealing with classes and methods. I didn't expect what I found.
– Chris K
Jan 28 '13 at 23:16
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C++ performance vs. Java/C#
My understanding is that C/C++ produces native code to run on a particular machine architecture. Conversely, languages like Java and C# run on top of a virtual machine which abstracts away the native architecture. Logically it would seem impossible for Java or C# to match the speed of C++ because ...
ERROR 1452: Cannot add or update a child row: a foreign key constraint fails
...relationships involve a parent table that holds the
central data values, and a child table with identical values pointing
back to its parent. The FOREIGN KEY clause is specified in the child
table.
It will reject any INSERT or UPDATE operation that attempts to create
a foreign key value...