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How to compare variables to undefined, if I don’t know whether they exist? [duplicate]
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190
The best way is to check the type, because undefined/null/false are a tricky thing in JS.
So:
i...
PostgreSQL: Which Datatype should be used for Currency?
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answered Mar 31 '13 at 11:03
Chris FarmiloeChris Farmiloe
12.6k33 gold badges4343 silver badges5656 bronze badges
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Rails - Could not find a JavaScript runtime?
I created a new Rails project using rails 3.1.0.rc4 on my local machine but when I try to start the server I get:
Could not find a JavaScript runtime. See here for a list of available runtimes. ( ExecJS::RuntimeUnavailable )
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JPA: what is the proper pattern for iterating over large result sets?
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}
then, use it like this:
private void iterateAll()
{
int offset = 0;
List<Model> models;
while ((models = Model.getAllModelsIterable(offset, 100)).size() > 0)
{
entityManager.getTransaction().begin();
for (Model model : models)
{
log...
Mysql - How to quit/exit from stored procedure
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207
CREATE PROCEDURE SP_Reporting(IN tablename VARCHAR(20))
proc_label:BEGIN
IF tablename IS N...
What is a rune?
...r <= 122:
return r - 32
case 65 <= r && r <= 90:
return r + 32
default:
return r
}
}
func main() {
fmt.Println(SwapRune('a'))
}
It should be obvious, if you were to look at the Unicode mapping, which is identical to ASCII in that range. Fur...
How to explicitly discard an out argument?
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100
Starting with C# 7.0, it is possible to avoid predeclaring out parameters as well as ignoring t...
What is the command to exit a Console application in C#?
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You can use Environment.Exit(0); and Application.Exit
Environment.Exit(0) is cleaner.
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Easiest way to check for an index or a key in an array?
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edited May 23 '17 at 12:10
Community♦
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answered Nov 4 '12 at 18:25
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How do I get the list of keys in a Dictionary?
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answered Aug 14 '09 at 8:59
CamalCamal
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