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Using braces with dynamic variable names in PHP
...t $variableName between {} :
${$variableName} = $value;
Using {} is only mandatory when the name of your variable is itself a composition of multiple values, like this :
${$variableNamePart1 . $variableNamePart2} = $value;
It is nevertheless recommended to always use {}, because it's more readable...
What exactly is a reentrant function?
...rant?
No.
For example, let's have a C++ function that takes both a lock, and a callback as a parameter:
#include <mutex>
typedef void (*callback)();
std::mutex m;
void foo(callback f)
{
m.lock();
// use the resource protected by the mutex
if (f) {
f();
}
// u...
Remove menu and status bars in TinyMCE 4
I am trying to remove the menu and status bars from TinyMCE 4 because I want to setup a very basic editor. Is this possible?
...
JavaScript exponents
...inal specification. It is supposed to work in a similar manner with python and matlab:
a**b // will rise a to the power b
Now it is already implemented in Edge14, Chrome52, and also it is available with traceur or babel.
...
How to access object attribute given string corresponding to name of that attribute
...
There are built-in functions called getattr and setattr
getattr(object, attrname)
setattr(object, attrname, value)
In this case
x = getattr(t, 'attr1')
setattr(t, 'attr1', 21)
share
...
How to convert an ArrayList containing Integers to primitive int array?
...ze the fact the ArrayList implements Iterable (via Collection inheritance) and do: for(int n : integer) { ret[counter++] = n; } ... and initialize int counter = 0;
– gardarh
Feb 14 '14 at 15:04
...
How to access a preexisting collection with Mongoose?
... change the collection name at runtime? I have 5 collections of UserSchema and I want to give each one a different name Eg: users_server1, users_server2, users_server3...
– Ragnar
Jun 6 '14 at 20:41
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How do I save a stream to a file in C#?
... If this input stream is got from http connection then will it buffer and download and then write all the bytes from the source?????
– dbw
Jan 4 '14 at 14:16
2
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How to replace a set of tokens in a Java String?
...efficient way would be using a matcher to continually find the expressions and replace them, then append the text to a string builder:
Pattern pattern = Pattern.compile("\\[(.+?)\\]");
Matcher matcher = pattern.matcher(text);
HashMap<String,String> replacements = new HashMap<String,String&...
How can I increment a date by one day in Java?
...Docs would clarify that this would increment larger fields (like the month and year). Calendar.roll "Adds or subtracts (up/down) a single unit of time on the given time field without changing larger fields" .. Again, "larger fields" is vague but that seems consistent with Sam's comment. I wish t...