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How do I make a JAR from a .java file?
...mpilation from the command line
javac -d ./build *.java
if there are no errors, in the build directory you should have your class tree
move to the build directory and do a
jar cvf YourJar.jar *
For adding manifest check jar command line switches
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MVC 5 Seed Users and Roles
...when it comes to the line manager.AddToRole(user.Id, "AppAdmin") I get the error message "UserId not found." If you have any idea what I'm missing I'd much appreciate the information.
– Tom Regan
Feb 9 '15 at 1:36
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django admin - add custom form fields that are not part of the model
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@sthzg, Because it's not correct. It gives me the error: YourModelAdmin.list_display[0], 'extra_field' is not a callable or an attribute of 'YourModelAdmin' or found in the model 'YourModel'.
– Cerin
Jun 13 '16 at 15:39
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PHP code to convert a MySQL query to CSV [closed]
...ELECT * FROM table_name";
$export = mysql_query ( $select ) or die ( "Sql error : " . mysql_error( ) );
$fields = mysql_num_fields ( $export );
for ( $i = 0; $i < $fields; $i++ )
{
$header .= mysql_field_name( $export , $i ) . "\t";
}
while( $row = mysql_fetch_row( $export ) )
{
$line...
Why does this method print 4?
I was wondering what happens when you try to catch an StackOverflowError and came up with the following method:
7 Answers
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The name 'model' does not exist in current context in MVC3
... an project. When I tried to add the following declaration to it, I get an error: "The name 'model' does not exist in current context".
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Injecting a mock into an AngularJS service
...ide calls must be made before using $injector otherwise, you'll receive an error: Injector already created, can not register a module!
– providencemac
Mar 25 '15 at 20:33
7
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Can pandas automatically recognize dates?
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Did not work for me, I got the following error: TypeError: strptime() argument 1 must be str, not float
– Jean Paul
May 4 '17 at 12:36
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Stock ticker symbol lookup API [closed]
...ange prefix. For example, if you query "BTIM", you'll get a "Bad Request" error but "AMEX:BTIM" works. A few stocks don't work even with the exchange prefix. For example, querying "FTWRD" and "NASDAQ:FTWRD" both generate "Bad Request" errors even though Google Finance does have information for th...
How to use @Nullable and @Nonnull annotations more effectively?
...tions are only useful for your IDE to warn you of potentially null pointer errors.
As said in the "Clean Code" book, you should check your public method's parameters and also avoid checking invariants.
Another good tip is never returning null values, but using Null Object Pattern instead.
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