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Iterating C++ vector from the end to the beginning
...
The best way is:
for (vector<my_class>::reverse_iterator i = my_vector.rbegin();
i != my_vector.rend(); ++i ) {
}
rbegin()/rend() were especially designed for that purpose. (And yes, incrementing a reverse_interator moves it backward.)
Now...
What's so wrong about using GC.Collect()?
...ule #2
Consider calling GC.Collect() if some
non-recurring event has just happened
and this event is highly likely to
have caused a lot of old objects to
die.
A classic example of this is if you're
writing a client application and you
display a very large and complicated
form that has a lot of data ...
Check if object is a jQuery object
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isn't obj.__proto__.jquery instead of obj.constructor.prototype.jquery enough? just a bit short :)
– Axel
Jul 3 '17 at 9:35
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How to configure XAMPP to send mail from localhost?
...upport.google.com/accounts/answer/6010255 to allow access from less secure apps.
To send email on Linux (with sendmail package) through Gmail from
localhost please check PHP+Ubuntu Send email using gmail form
localhost.
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What is the default text size on Android?
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Default values in appcompat-v7
<dimen name="abc_text_size_body_1_material">14sp</dimen>
<dimen name="abc_text_size_body_2_material">14sp</dimen>
<dimen name="abc_text_size_button_material">14sp</dimen>
<dimen name="abc_text_size_caption...
Calculating a directory's size using Python?
...
This walks all sub-directories; summing file sizes:
import os
def get_size(start_path = '.'):
total_size = 0
for dirpath, dirnames, filenames in os.walk(start_path):
for f in filenames:
fp = os.path.join(dirpath, f)
# skip if it is symbolic link
...
PHP convert XML to JSON
...vert xml to json in php. If I do a simple convert using simple xml and json_encode none of the attributes in the xml show.
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Omitting all xsi and xsd namespaces when serializing an object in .NET?
...hNamespaces
{
// private fields backing the properties
private int _Epoch;
private string _Label;
// explicitly define a distinct namespace for this element
[XmlElement(Namespace="urn:Whoohoo")]
public string Label
{
set { _Label= value; }
get { return ...
How to check if a map contains a key in Go?
...thout worrying about the actual
value, you can use the blank identifier (_) in place of the usual
variable for the value.
_, present := timeZone[tz]
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How to remove array element in mongodb?
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Try the following query:
collection.update(
{ _id: id },
{ $pull: { 'contact.phone': { number: '+1786543589455' } } }
);
It will find document with the given _id and remove the phone +1786543589455 from its contact.phone array.
You can use $unset to unset the value ...