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C/C++ NaN constant (literal)?
...at in C/C++? Like in JavaScript you do: a = NaN . So later you can check if the variable is a number or no.
5 Answers
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Declare slice or make slice?
In Go, what is the difference between var s []int and s := make([]int, 0) ?
4 Answers
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What is the difference between Reader and InputStream?
What is the difference between Reader and InputStream?
And when to use what?
If I can use Reader for reading characters why I will use inputstream, I guess to read objects?
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Get Output From the logging Module in IPython Notebook
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For anyone trying to do this in Python 3: reload is now imp.reload
– kuzzooroo
Jan 15 '15 at 17:09
11
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ANTLR: Is there a simple example?
...message, and the files ExpLexer.java, ExpParser.java and Exp.tokens should now be generated.
To see if it all works properly, create this test class:
import org.antlr.runtime.*;
public class ANTLRDemo {
public static void main(String[] args) throws Exception {
ANTLRStringStream in = n...
Is it possible to download an old APK for my app from Google Play?
...ns to my app. Unfortunately, I didn't keep copies of all the old APKs, and now I'd like to test upgrade from the old versions to my new version. Is there any way to download Google's copy of my old versions? The Google Play developer console shows my old APKs, but without a download link. I tried "R...
How can I add an ampersand for a value in a ASP.net/C# app config file value
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@DLeh If you are working with a ViewBag in a .cshtml file you would need to call Html.Raw in your .cshtml file to prevent it from being escaped by the framework.
– user700390
May 21 at 17:51
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PostgreSQL naming conventions
..., etc, the prevalent convention is:
SQL keywords: UPPER CASE
names (identifiers): lower_case_with_underscores
For example:
UPDATE my_table SET name = 5;
This is not written in stone, but the bit about identifiers in lower case is highly recommended, IMO. Postgresql treats identifiers case ins...
pandas: multiple conditions while indexing data frame - unexpected behavior
...ormal Python code, and and or have basic Python semantics that can't be modified. & and |, on the other hand, have corresponding special methods which control their behaviour. (In query strings, of course, we're free to apply any parsing we like.)
– DSM
J...
What are enums and why are they useful?
...s (contract status: "permanent", "temp", "apprentice"), or flags ("execute now", "defer execution").
If you use enums instead of integers (or String codes), you increase compile-time checking and avoid errors from passing in invalid constants, and you document which values are legal to use.
BTW, o...