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How do I output the difference between two specific revisions in Subversion?
...vn diff -r 8979:11390 http://svn.collab.net/repos/svn/trunk/fSupplierModel.php
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How to concatenate items in a list to a single string?
...of many types (generators, list, tuples, etc).
.join is faster because it allocates memory only once. Better than classical concatenation (see, extended explanation).
Once you learn it, it's very comfortable and you can do tricks like this to add parentheses.
>>> ",".join("12345").join((...
When should I use a NoSQL database instead of a relational database? Is it okay to use both on the s
... This may good for storing people who are online in instant messaging app, tokens in db, logging web site traffic stats.
Performing Geolocation Operations:
MongoDB hash rich support for doing GeoQuerying & Geolocation operations.
I really loved this feature of MongoDB.
In nutshell, MongoDB is ...
Does Java have buffer overflows?
...ing which will check that data cannot be accessed from area outside of the allocated array. When one tries to access area that is beyond the size of the array, an ArrayOutOfBounds exception will be thrown.
If there is a buffer-overrun, it is probably from a bug in the Java Virtual Machine, and is, ...
Remove last character from C++ string
...ed. I think you're thinking of reserve, which at least might reduce memory allocated if asked to - see resize here and reserve here.
– Steve314
Mar 5 '14 at 6:53
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How to remove all the occurrences of a char in c++ string
...d::string output;
output.reserve(str.size()); // optional, avoids buffer reallocations in the loop
for(size_t i = 0; i < str.size(); ++i)
if(str[i] != 'a') output += str[i];
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How can I echo a newline in a batch file?
... is expected. The best summary I know of is at dostips.com/forum/viewtopic.php?p=4554#p4554. It kind of leaves you hanging, but no one has ever come up with a scenario where ECHO( fails.
– dbenham
Apr 18 '14 at 17:20
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How to make button look like a link?
...t for the sake of simplicity i will use them here):
<a href="some/page.php" title="perform some js action" onclick="callFunction(this.href);return false;">watch and learn</a>
with this.href you can even access the target of the link in your function. return false will just prevent bro...
Get child node index
...es). Array.prototype.indexOf accesses that implementation directly without allocating an anonymous instance. The difference is going to be negligible in almost all circumstances, so frankly it may not be worth caring about.
– Scott Miles
Jun 24 '15 at 17:03
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Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize
...XX:MaxMetaspaceSize option.
-XX:PermSize=size
Sets the space (in bytes) allocated to the permanent generation that triggers a garbage collection if it is exceeded. This option was deprecated in JDK 8, and superseded by the -XX:MetaspaceSize option.
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