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Change values while iterating
...is behavior is demonstrated by the following code:
x := make([]int, 3)
x[0], x[1], x[2] = 1, 2, 3
for i, val := range x {
println(&x[i], "vs.", &val)
}
The code prints you completely different memory locations for the value from range and the actual
value in the slice:
0xf84000f0...
How to use Bash to create a folder if it doesn't already exist?
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280
First, in bash "[" is just a command, which expects string "]" as a last argument, so the whites...
Reading InputStream as UTF-8
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190
Solved my own problem. This line:
BufferedReader in = new BufferedReader(new InputStreamReader(...
Handler is abstract ,cannot be instantiated
...rying to be TOO clever at importing/autocompleting is one i.e. is quicker 90% of the time, is 5 x slower 10% of the time. Thanks again
– Joel Balmer
Mar 12 '14 at 22:20
1
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Convert HttpPostedFileBase to byte[]
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260
As Darin says, you can read from the input stream - but I'd avoid relying on all the data being ...
Why use apparently meaningless do-while and if-else statements in macros?
...
#define BAR(X) do { \
int i = f(X); \
if (i > 4) g(i); \
} while (0)
You don't have to use do ... while, you could cook up something with if ... else as well, although when if ... else expands inside of an if ... else it leads to a "dangling else", which could make an existing dangling el...
How to get multiple counts with one SQL query?
...or_id,
count(*) AS total,
sum(case when level = 'exec' then 1 else 0 end) AS ExecCount,
sum(case when level = 'personal' then 1 else 0 end) AS PersonalCount
FROM yourtable
GROUP BY distributor_id
share
...
Swift - Cast Int into enum:Int
...tch a bug in this case.
– X.Y.
Dec 30 '18 at 22:48
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How to set a Timer in Java?
... @Override
public void run() {
// Your database code here
}
}, 2*60*1000);
// Since Java-8
timer.schedule(() -> /* your database code here */, 2*60*1000);
To have the task repeat after the duration you would do:
timer.scheduleAtFixedRate(new TimerTask() {
@Override
public void run...
How can you display the Maven dependency tree for the *plugins* in your project?
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104
The output via mvn -X will printout the information indirectly. Currently there is no other opt...