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Is “for(;;)” faster than “while (TRUE)”? If not, why do people use it?
... a keyword. I prefer it to while (true), while (1), while (42), while (!0) etc etc.
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How can jQuery deferred be used?
...ore it's returned immediately from the cache. Otherwise, an AJAX request fetches the data and adds it to the cache. The $.when/.then doesn't care about any of this; all you need to be concerned about is using the response, which is passed to the .then() handler in both cases. jQuery.when() handles...
What does “The APR based Apache Tomcat Native library was not found” mean?
...ided in the Java Runtime (such as sendfile, epoll, OpenSSL, system status, etc.). Tomcat will run just fine without it, but for some use cases, it will be faster with the native libraries.
If you really want it, download the tcnative-1.dll (or libtcnative.so for Linux) and put it in the bin folder,...
How does PHP 'foreach' actually work?
...ointer backup+restore mechanism is that changes to the IAP through reset() etc. usually do not impact foreach. For example, the following code executes as if the reset() were not present at all:
$array = [1, 2, 3, 4, 5];
foreach ($array as &$value) {
var_dump($value);
reset($array);
}
/...
How does autowiring work in Spring?
... to that context. Web applications have a Servlet, JSF uses a el-resolver, etc. Also, there is a place where the application context is bootstrapped and all beans - autowired. In web applications this can be a startup listener.
Autowiring happens by placing an instance of one bean into the desired ...
What is the use of hashCode in Java?
...ed for bucketing in Hash implementations like HashMap, HashTable, HashSet, etc.
The value received from hashCode() is used as the bucket number for storing elements of the set/map. This bucket number is the address of the element inside the set/map.
When you do contains() it will take the hash cod...
Difference between map, applymap and apply methods in Pandas
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fastpaths when called with certain NumPy functions such as mean,
sum, etc.
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JavaScript: How to find out if the user browser is Chrome?
...t this, here's the code I used which excluded Edge, Maxthon, iOS safari ...etc var is_chrome = ((navigator.userAgent.toLowerCase().indexOf('chrome') > -1) &&(navigator.vendor.toLowerCase().indexOf("google") > -1));
– Alex C.
Mar 1 '16 at 16:09
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How do I tar a directory of files and folders without including the directory itself?
...rocessed. Consider the following command: tar --create --file=foo.tar -C /etc passwd hosts -C /lib libc.a" apl.jhu.edu/Misc/Unix-info/tar/tar_65.html I always try tar -czvf my_directory.tar.gz * -C my_directory and that does not work. -C location is important! Damn tar...
– m...
Excel to CSV with UTF8 encoding [closed]
I have an Excel file that has some Spanish characters (tildes, etc.) that I need to convert to a CSV file to use as an import file. However, when I do Save As CSV it mangles the "special" Spanish characters that aren't ASCII characters. It also seems to do this with the left and right quotes and l...