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Validating URL in Java
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The java.net.URL class is in fact not at all a good way of validating URLs. MalformedURLException is not thrown on all malformed URLs during construction. Catching IOException on java.net.URL#openConnection().connect() does not validate URL either, only tell wether ...
Creating an iframe with given HTML dynamically
...cross browsers and it's only over a year after I answered that someone actually complained. No it's not cross browser. But let's be honest if you want code quality there is probably a much cleaner solution than using a iframe in the first place :)
– GillesC
N...
How to solve privileges issues when restore PostgreSQL Database
...ssign the proper ownership permissions. Try the below which should resolve all permission related issues for specific users but as stated in the comments this should not be used in production:
root@server:/var/log/postgresql# sudo -u postgres psql
psql (8.4.4)
Type "help" for help.
postgres=# \du
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What parameters should I use in a Google Maps URL to go to a lat-lon?
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In May 2017 Google announced the Google Maps URLs API that allows to construct universal cross-platform links. Now you can open Google maps on web, Android or iOS using the same URL string in form:
https://www.google.com/maps/search/?api=1&parameters
There are several modes tha...
内存管理内幕：动态分配的选择、折衷和实现 - C/C++ - 清泛网 - 专注C/C++及内核技术
...他程序使用。
实现这些需求的程序库称为 分配程序（allocators），因为它们负责分配和回收内存。程序的动态性越强，内存 管理就越重要，您的内存分配程序的选择也就更重要。让我们来了解可用于内存管理的不同方法，它...
Round to at most 2 decimal places (only if necessary)
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@James Wow that's really weird- I'm working in the Chrome dev console and I'm noticing that 1.005 * 100 = 100.49999999999999. Math.round(100.49999999999999) evaluates to 100, whereas Math.round(100.5) evaluates to 101. IE9 does the same thing. T...
Call a stored procedure with parameter in c#
...do a delete, insert and update in my program and I try to do an insert by call a created stored procedure from my database.
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What is the maximum length of a Push Notification alert text?
... thing the documentation says is:
In iOS 8 and later, the maximum size allowed for a notification payload is 2 kilobytes; Apple Push Notification Service refuses any notification that exceeds this limit. (Prior to iOS 8 and in OS X, the maximum payload size is 256 bytes.)
This is what I could ...
Convert PDF to image with high resolution
...o the result of my original command (the image on the right):
(To really see and appreciate the differences between the two, right-click on each and select "Open Image in New Tab...".)
Also keep the following facts in mind:
The worse, blurry image on the right has a file size of 1.941.702 ...
Simulating Slow Internet Connection
I know this is kind of an odd question. Since I usually develop applications based on the "assumption" that all users have a slow internet connection. But, does anybody think that there is a way to programmatically simulate a slow internet connection, so I can "see" how an application performs under...