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How to navigate through a vector using iterators? (C++)
...e first and the last element respectively.
using namespace std;
vector<string> myvector; // a vector of stings.
// push some strings in the vector.
myvector.push_back("a");
myvector.push_back("b");
myvector.push_back("c");
myvector.push_back("d");
vector<string>::iterator it; /...
RuntimeWarning: DateTimeField received a naive datetime
...
Where you write tzinfo=<UTC>, what is <UTC>? That is not a syntactic construct I have seen.
– jameshfisher
Feb 13 '15 at 10:28
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How to map a composite key with JPA and Hibernate?
...4,
“EmbeddedId Annotation”) or must be
represented and mapped to multiple
fields or properties of the entity
class (see Section 9.1.15, “IdClass
Annotation”).
If the composite primary key class is mapped to multiple fields or
properties of the entity class, the
names of prima...
Case insensitive string as HashMap key
...
Map<String, String> nodeMap =
new TreeMap<>(String.CASE_INSENSITIVE_ORDER);
That's really all you need.
share
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LINQ with groupby and count
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After calling GroupBy, you get a series of groups IEnumerable<Grouping>, where each Grouping itself exposes the Key used to create the group and also is an IEnumerable<T> of whatever items are in your original data set. You just have to call Count() on that Grouping to get t...
How to convert an image to base64 encoding?
...y:
$imagedata = file_get_contents("/path/to/image.jpg");
// alternatively specify an URL, if PHP settings allow
$base64 = base64_encode($imagedata);
bear in mind that this will enlarge the data by 33%, and you'll have problems with files whose size exceed your memory_limit.
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Is it a bad practice to catch Throwable?
...ber( getUserInput() );
} catch(Throwable e) {
inputNumber = 10; //Default, user did not enter valid number
}
Now, let's say that getUserInput() blocks for a while, and another thread stops your thread in the worst possible way ( it calls thread.stop() ). Your catch block will catch a ThreadDe...
Submit HTML form on self page
...L5 stuff, you can just omit the 'action' attribute to self-submit a form
<form>
Actually, the Form Submission subsection of the current HTML5 draft does not allow action="" (empty attribute). It is against the specification.
From this other Stack Overflow answer.
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Bootstrap with jQuery Validation Plugin
...to override some plugins methods:
// override jquery validate plugin defaults
$.validator.setDefaults({
highlight: function(element) {
$(element).closest('.form-group').addClass('has-error');
},
unhighlight: function(element) {
$(element).closest('.form-group').removeCla...
How can I get a file's size in C? [duplicate]
...it has no real standard portability)."
– Mika Haarahiltunen
Sep 2 '13 at 10:43
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