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How to convert JSON string to array
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If you pass the JSON in your post to json_decode, it will fail. Valid JSON strings have quoted keys:
json_decode('{foo:"bar"}'); // this fails
json_decode('{"foo":"bar"}', true); // returns array("foo" => "bar")
j...
Can someone explain how to implement the jQuery File Upload plugin?
...ppendTo(ul);
// Initialize the knob plugin. This part can be ignored, if you are showing progress in some other way.
tpl.find('input').knob();
// Listen for clicks on the cancel icon
tpl.find('span').click(function(){
if(tpl.hasClass('working')){
jqXHR.abort();
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How do I pass the this context to a function?
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var obj_a = {
name: "FOO"
};
var obj_b = {
name: "BAR!!"
};
Now you can call:
myfunc.call(obj_a);
Which would alert FOO. The other way around, passing obj_b would alert BAR!!. The difference between .call() and .apply() is that .call() takes a comma separated list if you're passing...
ImportError: No module named MySQLdb
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If you're having issues compiling the binary extension, or on a platform where you cant, you can try using the pure python PyMySQL bindings.
Simply pip install pymysql and switch your SQLAlchemy URI to start like this:
SQLA...
C++对象布局及多态探索之菱形结构虚继承 - C/C++ - 清泛网 - 专注C/C++及内核技术
...0则从C100和C101多重继承而来。
struct C041
{
C041() : c_(0x01) {}
virtual void foo() { c_ = 0x02; }
char c_;
};
struct C100 : public virtual C041
{
C100() : c_(0x02) {}
char c_;
};
struct C101 : public virtual C041
{
C101() : c_(0x03) {}
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Get selected subcommand with argparse
...k a', alpha)
def task_b(beta, gamma):
print('task b', beta, gamma)
if __name__ == '__main__':
parser = argparse.ArgumentParser()
subparsers = parser.add_subparsers(dest='subparser')
parser_a = subparsers.add_parser('task_a')
parser_a.add_argument(
'-a', '--alpha', de...
How to search for a part of a word with ElasticSearch
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n-grams can waste memory if you're not careful; the min_gram and max_gram analyzer settings should be enough to narrow searches down to one record, and no more (a max_gram of 15 over a name is probably wasteful, since very few names share a substring...
Volley Android Networking Library
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The Volley library is now published by the Android Open Source Project:
dependencies {
implementation 'com.android.volley:volley:1.1.0'
}
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What is exactly the base pointer and stack pointer? To what do they point?
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Thanks for the explanation! But I am now kinda confused. Let's assume I call a function and I am in the first line of its prolog, still without having executed a single line from it. At that point, what is ebp's value? Does the stack have anything at that point ...
Better way to check variable for null or empty string?
Since PHP is a dynamic language what's the best way of checking to see if a provided field is empty?
10 Answers
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