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How is set() implemented?
...where the time is O(n) then it is O(n).. I don't understand anything right now from all those tutorials.
– Claudiu Creanga
Sep 21 '16 at 21:13
4
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Python function global variables?
I know I should avoid using global variables in the first place due to confusion like this, but if I were to use them, is the following a valid way to go about using them? (I am trying to call the global copy of a variable created in a separate function.)
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best way to preserve numpy arrays on disk
... @daniel451 Because any language can read binary files if they just know the shape, data type and whether it's row or column based. If you're just using Python then npy is fine, probably a little easier than binary.
– Mark
Jun 2 '17 at 19:36
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How to log cron jobs?
I want to know how I can see exactly what the cron jobs are doing on each execution. Where are the log files located? Or can I send the output to my email? I have set the email address to send the log when the cron job runs but I haven't received anything yet.
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How do I correctly detect orientation change using Phonegap on iOS?
...approach. So far it's been the only way that's worked for me, but I don't know if there are better, more streamlined ways.
UPDATE fixed the code above, it works now
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Mongodb Explain for Aggregation framework
...gate(
[ ...your pipeline...],
{ explain: true }
)
Thanks to Rafa, I know that it was possible to do even in 2.4, but only through runCommand(). But now you can use aggregate as well.
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Fastest way to iterate over all the chars in a String
...tarting from Java 9, the solution as described won't work anymore, because now Java will store strings as byte[] by default.
SECOND UPDATE: As of 2016-10-25, on my AMDx64 8core and source 1.8, there is no difference between using 'charAt' and field access. It appears that the jvm is sufficiently opt...
Regular expressions in C: examples?
...g PCRE2. This means you can literally use all the regex examples out there now and not have to translate from some ancient regex.
I made an answer for this already, but I think it can help here too..
Regex In C To Search For Credit Card Numbers
// YOU MUST SPECIFY THE UNIT WIDTH BEFORE THE INCLU...
What’s the best way to reload / refresh an iframe?
...to reload an <iframe> using JavaScript. The best way I found until now was set the iframe’s src attribute to itself, but this isn’t very clean. Any ideas?
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Type safety: Unchecked cast
...till get this warning. The problem is, getBean returns Object, so it is unknown what the type is. Converting it to HashMap directly would not cause the problem with the second case (and perhaps there would not be a warning in the first case, I'm not sure how pedantic the Java compiler is with warnin...