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What is more efficient: Dictionary TryGetValue or ContainsKey+Item?
...
Why don't you test it?
But I'm pretty sure that TryGetValue is faster, because it only does one lookup. Of course this isn't guaranteed, i.e. different implementations might have different performance characteristics.
The way I'd impleme...
What are the uses of “using” in C#?
...ode is a bit different when MyRessource is a struct. There is obviously no test for nullity, but also no boxing to IDisposable. A constrained virtual call is emitted.
– Romain Verdier
May 3 '14 at 14:31
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Accessing members of items in a JSONArray with Java
...ava8 Stream API.
import org.json.JSONArray;
import org.json.JSONObject;
@Test
public void access_org_JsonArray() {
//Given: array
JSONArray jsonArray = new JSONArray(Arrays.asList(new JSONObject(
new HashMap() {{
put("a", 100);
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PHP abstract properties
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As you could have found out by just testing your code:
Fatal error: Properties cannot be declared abstract in ... on line 3
No, there is not. Properties cannot be declared abstract in PHP.
However you can implement a getter/setter function abstract, this...
How to round a number to significant figures in Python
...es, you can use:
print('{:g}'.format(float('{:.{p}g}'.format(i, p=n))))
Test:
a = [1234, 0.12, 0.012, 0.062, 6253, 1999, -3.14, 0., -48.01, 0.75]
b = ['{:g}'.format(float('{:.1g}'.format(i))) for i in a]
# b == ['1000', '0.1', '0.01', '0.06', '6000', '2000', '-3', '0', '-50', '0.8']
Note: with...
How do I ZIP a file in C#, using no 3rd-party APIs?
...the ZipArchive and ZipFile classes.
using (ZipArchive zip = ZipFile.Open("test.zip", ZipArchiveMode.Create))
{
zip.CreateEntryFromFile(@"c:\something.txt", "data/path/something.txt");
}
You need to add references to:
System.IO.Compression
System.IO.Compression.FileSystem
For .NET Core tar...
When to use an assertion and when to use an exception
...te that the java command turns off all assertions by default.)
Use regular tests for any kind of checks what shouldn't be turned off. This includes defensive checks that guard against potential damage cause by bugs, and any validation data / requests / whatever provided by users or external service...
Where to put the doxygen comment blocks for an internal library - in H or in CPP files? [closed]
....
/// @TODO make sure I implemented the algorithm correctly with some unit tests.
int add(int a, int b) {
return b + a;
}
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Find and kill a process in one line using bash and regex
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Nothing happened when I tested this.
– Orjanp
Aug 18 '10 at 13:30
8
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How to define “type disjunction” (union types)?
... -- with examples: github.com/GenslerAppsPod/scalavro/blob/master/util/src/test/…
– Connor Doyle
Aug 21 '13 at 19:40
6
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