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How do I check if a C++ std::string starts with a certain string, and convert a substring to an int?
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Use an overload of rfind which has the pos parameter:
std::string s = "tititoto";
if (s.rfind("titi", 0) == 0) {
// s starts with prefix
}
Who needs anything else? Pure STL!
Many have misread this to mean "search backwards through the whole string looking for the prefix". That w...
Why am I not getting a java.util.ConcurrentModificationException in this example?
...Evidence : run this snippet to see the result : public static void main(String... args) { List<String> listOfBooks = new ArrayList<>(); listOfBooks.add( "Code Complete" ); listOfBooks.add( "Code 22" ); listOfBooks.add( "22 Effective" ); listOfBooks.add( "Netbeans 33" ); S...
Which exception should I raise on bad/illegal argument combinations in Python?
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$ python -c 'print(sum())'
Traceback (most recent call last):
File "<string>", line 1, in <module>
TypeError: sum expected at least 1 arguments, got 0
Our junior dev just found this page in a google search for "python exception wrong arguments" and I'm surprised that the obvious (to...
How can I undo a `git commit` locally and on a remote after `git push`
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git log
you'll see bunch of 'f650a9e398ad9ca606b25513bd4af9fe...' like strings along with each of the commits. copy that number from the commit that you want to return back.
2. Now, type in below command:
git reset --hard your_that_copied_string_but_without_quote_mark
you should see message ...
Rails: How to change the text on the submit button in a Rails Form
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If you want to change all create and update form submit tags, this change is easy to make. Modify config/locales/en.yml like so:
en:
helpers:
submit:
create: "Crear un %{model}"
update: "Confirmar cambios al %{model} creado"
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How to format strings in Java
Primitive question, but how do I format strings like this:
8 Answers
8
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Add … if string is too long PHP [duplicate]
... but on the other, I just want to display the first 50 characters. If the string in the description field is less than 50 characters, then it won't show ... , but if it isn't, I will show ... after the first 50 characters.
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How can I force clients to refresh JavaScript files?
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I always knew the query strings are key-value pair as in ?ver=123. Thanks! :)
– Ankur-m
Feb 15 '12 at 11:41
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How do I measure the execution time of JavaScript code with callbacks?
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Use the Node.js console.time() and console.timeEnd():
var i;
console.time("dbsave");
for(i = 1; i < LIMIT; i++){
db.users.save({id : i, name : "MongoUser [" + i + "]"}, end);
}
end = function(err, saved) {
console.log(( err || !saved )?"Error...
Spring RestTemplate GET with parameters
...ing's UriComponentsBuilder class. It's cleaner than manually concatenating strings and it takes care of the URL encoding for you:
HttpHeaders headers = new HttpHeaders();
headers.set("Accept", MediaType.APPLICATION_JSON_VALUE);
UriComponentsBuilder builder = UriComponentsBuilder.fromHttpUrl(url)
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