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Mozilla PDF.js：PDF在线预览 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...这个文档应该可以凑合着用了。
PDF.js是什么
PDF.js is a Portable Document Format(PDF) viewer that is built with HTML5.PDF.js is community-driven and supportedby Mozilla Labs. Our goal is to create a general-purpose, web standards-basedplatform for parsing and rendering PDFs.
PDF.js...
Read-only list or unmodifiable list in .NET 4.0
... what I can tell, .NET 4.0 still lacks read-only lists. Why does the framework still lack this functionality? Isn't this one of the commonest pieces of functionality for domain-driven design ?
...
PHP check whether property exists in object or class
...ct variable, but I want to check whether a property is in the given object or class.
8 Answers
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How to dump a table to console?
...which contains nested tables (n-deep). I'd like to just dump it to std out or the console via a print statement or something quick and dirty but I can't figure out how. I'm looking for the rough equivalent that I'd get when printing an NSDictionary using gdb.
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How do I loop through or enumerate a JavaScript object?
...
You can use the for-in loop as shown by others. However, you also have to make sure that the key you get is an actual property of an object, and doesn't come from the prototype.
Here is the snippet:
var p = {
"p1": "value1",
"p...
CSS3 transform not working
I am trying to transform my menu items by rotating them 10 degrees. My CSS works in Firefox but I've failed to replicate the effect in Chrome and Safari. I know IE doesn't support this CSS3 property so that's not a problem.
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Difference between static STATIC_URL and STATIC_ROOT on Django
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STATIC_ROOT
The absolute path to the directory where ./manage.py collectstatic will collect static files for deployment.
Example: STATIC_ROOT="/var/www/example.com/static/"
now the command ./manage.py collectstatic will copy all the static files(ie in static folde...
Python dict how to create key or append an element to key?
...to do this so you can compare how it looks and choose what you like. I've ordered them in a way that I think is most "pythonic", and commented the pros and cons that might not be obvious at first glance:
Using collections.defaultdict:
import collections
dict_x = collections.defaultdict(list)
......
Assigning variables with dynamic names in Java
...pending on what you are trying to achieve, you should use an array, a List or a Map; e.g.
int n[] = new int[3];
for (int i = 0; i < 3; i++) {
n[i] = 5;
}
List<Integer> n = new ArrayList<Integer>();
for (int i = 1; i < 4; i++) {
n.add(5);
}
Map<String, Integer> n = ...
What does “javascript:void(0)” mean?
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The void operator evaluates the given
expression and then returns undefined.
The void operator is often used merely
to obtain the undefined primitive
value, usually using “void(0)” (which
is equivalent to “void 0”). In ...