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Determine if map contains a value for a key?
...s exist?
No. With the stl map class, you use ::find() to search the map, and compare the returned iterator to std::map::end()
so
map<int,Bar>::iterator it = m.find('2');
Bar b3;
if(it != m.end())
{
//element found;
b3 = it->second;
}
Obviously you can write your own getValue() r...
Convert Array to Object
...ectly into a new object: { ...[sortedArray]}
– HappyHands31
Jul 26 '19 at 15:18
4
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A variable modified inside a while loop is not remembered
...I'm using some sort of copy of the variable $foo inside the while loop and I am modifying only that particular copy. Here's a complete test program:
...
How to format strings in Java
...g.format, also take a look java.text.MessageFormat. The format less terse and a bit closer to the C# example you've provided and you can use it for parsing as well.
For example:
int someNumber = 42;
String someString = "foobar";
Object[] args = {new Long(someNumber), someString};
MessageForma...
PHP - Move a file into a different folder on the server
...ink function in PHP but have since been told that this can be quite risky and a security issue. (Previous code below:)
8 A...
How can I change the default Django date template format?
...
Link to docs isn't really an answer, so downvoted this and upvoted medmunds' answer.
– eric
Aug 21 '17 at 1:57
add a comment
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How can I reverse a list in Python?
...cing, such as range(1,4)[::-1], reversed() is easier to read, runs faster, and uses substantially less memory. "
– Jim Oldfield
Aug 20 '16 at 15:55
5
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Building a fat jar using maven
...vn package will produce two jars: one containing just the project classes, and a second fat jar with all dependencies with the suffix "-jar-with-dependencies".
if you want correct classpath setup at runtime then also add following plugin
<plugin>
<groupId>org.apache.maven.plugins&l...
Why does Maven warn me about encoding?
...e for building the archetype at target/generated-sources/archetype/pom.xml and then runs the package goal (by default) on this POM.
The generated POM file doesn't have project.build.sourceEncoding or any other property defining encoding, and that's why you get the warning.
The POM is generated fro...
Two arrays in foreach loop
... generate a selectbox using two arrays, one containing the country codes and another containing the country names.
22 Ans...