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SQLite select where empty?
...e faster in some situation, as comparing numbers is simpler than comparing strings. If the performance for that is a concern, you should of course check what it does.
– Guffa
Apr 16 '12 at 11:16
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java: HashMap not working
HashMap<String, int> doesn't seem to work but HashMap<String, Integer> does work.
Any ideas why?
5 Answers
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How can I read a whole file into a string variable
...
Use ioutil.ReadFile:
func ReadFile(filename string) ([]byte, error)
ReadFile reads the file named by filename and returns the contents. A successful call
returns err == nil, not err == EOF. Because ReadFile reads the whole file, it does not treat
an EOF from R...
'const string' vs. 'static readonly string' in C#
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When you use a const string, the compiler embeds the string's value at compile-time.
Therefore, if you use a const value in a different assembly, then update the original assembly and change the value, the other assembly won't see the change unti...
How can I open a URL in Android's web browser from my application?
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URLUtil is a great way to check on user entered "url" Strings
– Dan
Jun 21 '11 at 19:30
94
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iOS: how to perform a HTTP POST request?
...nd/or HTTP headers, use NSMutableURLRequest with
(void)setHTTPMethod:(NSString *)method
(void)setHTTPBody:(NSData *)data
(void)setValue:(NSString *)value forHTTPHeaderField:(NSString *)field
Send your request in 2 ways using NSURLConnection:
Synchronously: (NSData *)sendSynchronousRequest:(NSU...
Concatenate a vector of strings/character
...f I have a vector of type character, how can I concatenate the values into string? Here's how I would do it with paste() :
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How do I make a LinearLayout scrollable?
...iew
android:id="@+id/title"
android:text="@string/title"
android:layout_widt
Rails :include vs. :joins
...ment belongs_to a User.
The User model has the following attributes: Name(string), Age(integer). The Comment model has the following attributes:Content, user_id. For a comment a user_id can be null.
Joins:
:joins performs a inner join between two tables. Thus
Comment.joins(:user)
#=> <A...
How to get ID of the last updated row in MySQL?
...uids := CONCAT_WS(',', fooid, @uids) );
SELECT @uids;
This will return a string with all the IDs concatenated by a comma.
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