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How do I get IntelliJ IDEA to display directories?
...lliJ IDEA for JavaScript editing, and I like it so far, but I'm having a small problem with a new project.
15 Answers
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Mixing a PHP variable with a string literal
...ake a look to the Variable parsing - Complex (curly) syntax section of the PHP manual.
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App Inventor 2 UrsPahoMqttClient 拓展 - 物联网轻量级MQTT协议 · App Inventor 2 中文网
...nt is closed.
32201
使用已经关联其他操作的Token发出请求。由于包装器的实现，不会发生此错误。
Token already in use.
32202
已发出发送消息的请求，但已达到最大队列中消息数量。
Too many publis...
call a static method inside a class?
how do i call a static method from another method inside the same class?
4 Answers
4
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How do I insert NULL values using PDO?
...akes a variable, to reference, and doesn't pull in a value at the time of calling bindParam. I found this in a comment on the php docs:
bindValue(':param', null, PDO::PARAM_INT);
EDIT: P.S. You may be tempted to do this bindValue(':param', null, PDO::PARAM_NULL); but it did not work for everybody...
List all environment variables from the command line
... To achieve the same behavior in cmd, you need something like this for /f "tokens=1,2 delims==" ... which becomes very complicated ...
– ROMANIA_engineer
Jan 14 '16 at 9:12
6
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break out of if and foreach
...t "break out of it".
You can, however, break out of the foreach by simply calling break. In your example it has the desired effect:
foreach($equipxml as $equip) {
$current_device = $equip->xpath("name");
if ( $current_device[0] == $device ) {
// found a match in the file ...
string sanitizer for filename
...a whitelist of characters you are happy to be used? For example, you could allow just good ol' a-z, 0-9, _, and a single instance of a period (.). That's obviously more limiting than most filesystems, but should keep you safe.
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Mapping over values in a python dictionary
..., f(kv[1])), my_dictionary.iteritems()))
but that's not that readable, really.
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Recursion or Iteration?
...n if the recursive function is tail recursive (the last line is recursive call). Tail recursion should be recognized by the compiler and optimized to its iterative counterpart (while maintaining the concise, clear implementation you have in your code).
I would write the algorithm in the way that m...