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Forward declaration of nested types/classes in C++
... // class D { };
A::B *someField;
};
int main() {
A a;
C::D * test = a.someField; // here it can be called C::D
}
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Use Expect in a Bash script to provide a password to an SSH command
...sh.
An example:
sshpass -p<password> ssh <arguments>
sshpass -ptest1324 ssh user@192.168.1.200 ls -l /tmp
The above command can be easily integrated with a Bash script.
Note: Please read the Security Considerations section in man sshpass for a full understanding of the security implicat...
Rename multiple files by replacing a particular pattern in the filenames using a shell script [dupli
...es and is easily configurable. Also, the example gives the non-destructive test to make sure the changes are correct.
– Dan Mergens
Jan 15 '18 at 21:16
5
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phonegap open link in browser
...a 3.4.1 and android 4.2. I did not need a plugin. I will report back after testing on iOS7.
– pgsandstrom
May 4 '14 at 17:17
...
Make a borderless form movable?
...Message m)
{
base.WndProc(ref m);
if (m.Msg == WM_NCHITTEST)
m.Result = (IntPtr)(HT_CAPTION);
}
private const int WM_NCHITTEST = 0x84;
private const int HT_CLIENT = 0x1;
private const int HT_CAPTION = 0x2;
}
...
Send Email Intent
...
This is quoted from Android official doc, I've tested it on Android 4.4, and works perfectly. See more examples at https://developer.android.com/guide/components/intents-common.html#Email
public void composeEmail(String[] addresses, String subject) {
Intent intent = ...
What's the difference between comma separated joins and join on syntax in MySQL? [duplicate]
... to read, since it's self-explanatory.
In speed there is no difference (I tested it) and the execution plan is the same
If the query optimizer is doing its job right, there should be no difference between those queries. They are just two ways to specify the same desired result.
...
throwing an exception in objective-c/cocoa
...t does not reply the question. Maybe the OP just wants to crash the app to test whether the crash report framework is working as expected.
– Simon
Mar 19 '15 at 5:21
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JavaScript: clone a function
What is a fastest way to clone a function in JavaScript (with or without its properties)?
14 Answers
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How to get number of entries in a Lua table?
...nd increase it every time you make an insertion.
count = 0
tbl = {}
tbl["test"] = 47
count = count + 1
tbl[1] = 48
count = count + 1
print(count) -- prints "2"
There's no other way, the # operator will only work on array-like tables with consecutive keys.
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