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在 App Inventor 2 中使用图像 · App Inventor 2 中文网
...makes Android application development more complicated than before because now the application developer has to design their application to deal with different screen sizes and densities. The approach taken by Google is to design several UI versions for your application, complete with each version...
Split a module across several files
...threw out namespacing. Changing one file in a way unrelated to another can now break other files. Your use of 'use' becomes leaky (ie everything is like use super::*). You can't hide code from other files (which is important for unsafe-using safe abstractions)
– Demur Rumed
...
Why are variables “i” and “j” used for counters?
I know this might seem like an absolutely silly question to ask, yet I am too curious not to ask...
23 Answers
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MySQL Workbench Dark Theme
...-color="#9B859D" back-color="#2A2A2A" bold="No" /> <!-- SCE_MYSQL_KNOWNSYSTEMVARIABLE -->
<style id= "6" fore-color="#FF8080" back-color="#2A2A2A" bold="No" /> <!-- SCE_MYSQL_NUMBER -->
<style id= "7" fore-color="#7AAAD7" back-color="#2A2A2A" bold="...
Dependency Injection vs Factory Pattern
...ide to switch to a completely different implementation without the client knowing. DI on its own does not allow this. DI requires the client to specify the changes he wants.
– neuron
Apr 2 '16 at 5:20
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How to choose an AES encryption mode (CBC ECB CTR OCB CFB)?
...wever there are patents on it in USA.
The only thing you really have to know is that ECB is not to be used unless you are only encrypting 1 block. XTS should be used if you are encrypting randomly accessed data and not a stream.
You should ALWAYS use unique IV's every time you encrypt, and they ...
CORS Access-Control-Allow-Headers wildcard being ignored?
... @monsur: this answer pointed out that wildcards are allowed now, at least in theory, so I updated your answer to reflect this. If you don't like my style, feel free to edit to your taste.
– MvG
Sep 6 '16 at 14:53
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ZeroMQ的学习和研究（PHP代码实例） - C/C++ - 清泛网 - 专注C/C++及内核技术
...t for start of batch
$string = $receiver->recv ();
// Start our clock now
$tstart = microtime(true);
// Process 100 confirmations
$total_msec = 0; // Total calculated cost in msecs
for ($task_nbr = 0; $task_nbr < 100; $task_nbr++) {
$string = $receiver->recv ();
if($task_nbr % 10 == 0)...
Can someone explain the “debounce” function in Javascript
...t = this,
args = arguments;
// Should the function be called now? If immediate is true
// and not already in a timeout then the answer is: Yes
var callNow = immediate && !timeout;
// This is the basic debounce behaviour where you can call this
// func...
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
...the memory
* control block, but the users of malloc don't need
* to know this, so we'll just add it in for them.
*/
numbytes = numbytes + sizeof(struct mem_control_block);
/* Set memory_location to 0 until we find a suitable
* location
*/
memory_location = 0;
/* Begin searchin...