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Dictionary returning a default value if the key does not exist [duplicate]
... trygetvalue doesn't allow you to specify a default value, ie for a string value you may want it to return "" instead of null
– katbyte
Aug 12 '13 at 20:08
1
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NoSQL - MongoDB vs CouchDB [closed]
...ries are javascript expressions
Run arbitrary javascript functions server-side
Has geospatial indexing and queries
Multiple storage engines with different performance characteristics
Performance over features
Document validation
Journaling
Powerful aggregation framework
On 32bit systems, limited to ...
What is the use of the @ symbol in PHP?
...
That was a bit of a quick draw!
– Aiden Bell
Jun 23 '09 at 12:09
6
Yeah; down t...
MySQL “Group By” and “Order By”
.... GROUP BY is case insensitive so LOWER() is unnecessary, and second, $userID appears to be a variable directly from PHP, your code may be sql injection vulnerable if $userID is user-supplied and not forced to be an integer.
– velcrow
Apr 23 '13 at 18:09
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How do I detect that an iOS app is running on a jailbroken phone?
...ld be able to see if Cydia is installed and go by that - something like
NSString *filePath = @"/Applications/Cydia.app";
if ([[NSFileManager defaultManager] fileExistsAtPath:filePath])
{
// do something useful
}
For hacked kernels, it's a little (lot) more involved.
...
What is a daemon thread in Java?
...e in setDaemon.
public class DaemonTest {
public static void main(String[] args) {
new WorkerThread().start();
try {
Thread.sleep(7500);
} catch (InterruptedException e) {
// handle here exception
}
System.out.println("Main T...
Insert picture/table in R Markdown [closed]
...
Several sites provide reasonable cheat sheets or HOWTOs for tables and images. Top on my list are:
Pandoc readme, specifically tables
RStudio's RMarkdown, more details in basics (including tables) and a rewrite of pandoc's markdown.
Pictur...
Can I use a min-height for table, tr or td?
...00px;
}
Table cells will grow when the content does not fit.
https://jsfiddle.net/qz70zps4/
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Abstraction VS Information Hiding VS Encapsulation
...= the object internally,
Example:
In the .NET Framework, the System.Text.StringBuilder class provides an abstraction over a string buffer. This buffer abstraction lets you work with the buffer without regard for its implementation. Thus, you're able to append strings to the buffer without regard f...
Using Case/Switch and GetType to determine the object [duplicate]
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If I really had to switch on type of object, I'd use .ToString(). However, I would avoid it at all costs: IDictionary<Type, int> will do much better, visitor might be an overkill but otherwise it is still a perfectly fine solution.
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