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Determining whether jQuery has not found any element
...isEmptyObject($.find('#id'))
This will return true if the element exists and false if it doesn't.
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How to convert object array to string array in Java
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only on Java 1.6 and above
– newacct
Jul 5 '09 at 9:53
10
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Recompile Heroku slug without push or config change
...is a way to force Heroku to recompile the slug without pushing new commits and/or updating the config variables.
9 Answers
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Finding child element of parent pure javascript
... document.querySelectorAll('.parent .child1');
The difference between qS and qSA is that the latter returns all elements matching the selector, while the former only returns the first such element.
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C++ Lock-free Hazard Pointer（冒险指针） - C/C++ - 清泛网 - 专注C/C++及内核技术
...std::memory_order_acquire); p; p = p->next_) {
if (!p->active_.test_and_set()) {
return p;
}
}
auto p = new HazardPointer<T>();
p->active_.test_and_set();
do {
p->next_ = head_list_.load(std::memory_order_acquire);
} while (!head_list_.compare...
Java: how to convert HashMap to array
... answered Jul 7 '09 at 5:47
Landon KuhnLandon Kuhn
59.1k4141 gold badges9999 silver badges129129 bronze badges
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How do I remove the last comma from a string using PHP?
I am using a loop to get values from my database and my result is like:
11 Answers
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How to get xdebug var_dump to show full object/array
... set at runtime via ini_set(), useful if you don't want to modify php.ini and restart your web server but need to quickly inspect something more deeply.
ini_set('xdebug.var_display_max_depth', '10');
ini_set('xdebug.var_display_max_children', '256');
ini_set('xdebug.var_display_max_data', '1024');...
Convert Python dictionary to JSON array
...our script.
# -*- coding: UTF-8 -*-
This will fix some Unicode problems and make your life easier.
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NodeJS: How to get the server's port?
...en this(bottom line), when you create directory structure from express command:
alfred@alfred-laptop:~/node$ express test4
create : test4
create : test4/app.js
create : test4/public/images
create : test4/public/javascripts
create : test4/logs
create : test4/pids
create : test4/...