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Is there any way to check if iOS app is in background?
...App delegate gets callbacks indicating state transitions. You can track it based on that.
Also the applicationState property in UIApplication returns the current state.
[[UIApplication sharedApplication] applicationState]
...
How to import data from mongodb to pandas?
... 27017, database="db_tmp") columns = ["col1", "col2"] data_type = ["int64", "int64"] arrays = client.query("db_tmp", "coll", {}, columns, data_type) For 50000 records takes around 200s.
– nishant
Nov 27 '17 at 11:09
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How to parse a string to an int in C++?
...still a couple of other problems.
What if the number in the string is not base 10? We can try to accommodate other bases by setting the stream to the correct mode (e.g. ss << std::hex) before trying the conversion. But this means the caller must know a priori what base the number is -- and ho...
When should you not use virtual destructors?
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Also add: no intention to delete an instance via a base class pointer.
– Adam Rosenfield
Nov 19 '08 at 15:24
9
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Open Source Java Profilers [closed]
... Application Profiling using TPTP and here's a tutorial Profiling J2SE 5.0 based applications using Eclipse TPTP.
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What is an example of the Liskov Substitution Principle?
...havior.
Imagine you had SetWidth and SetHeight methods on your Rectangle base class; this seems perfectly logical. However if your Rectangle reference pointed to a Square, then SetWidth and SetHeight doesn't make sense because setting one would change the other to match it. In this case Square fai...
Convert boolean to int in Java
...00 random Boolean values and this method was consistently faster than that based on the ternary operator. It shaved off about 10ms.
– Mapsy
Oct 24 '14 at 13:14
3
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Measure elapsed time in Swift
...our NSDate code entirely: it's totally unreliable to use NSDate: NSDate is based on system clock, which can change at any time due to many different reasons, such as network time sync (NTP) updating the clock (happens often to adjust for drift), DST adjustments, leap seconds, and user manual adjustm...
How to get a list of repositories apt-get is checking? [closed]
...realised what the GET urls are that it spits out.
Edit: The following awk-based expression could be used to generate a sources.list:
cat /tmp/apt-update.txt | awk '/http/ { gsub("/", " ", $3); gsub("^\s\*$", "main", $3); printf("deb "); if($4 ~ "^[a-z0-9]$") printf("[arch=" $4 "] "); print($2 " "...
How do I load a file from resource folder?
...ere is one quick solution with the use of Guava:
import com.google.common.base.Charsets;
import com.google.common.io.Resources;
public String readResource(final String fileName, Charset charset) throws IOException {
return Resources.toString(Resources.getResource(fileName), charset);
}
U...