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Storing SHA1 hash values in MySQL
...INARY(20) and CHAR(40).
CREATE TABLE `binary` (
`id` int unsigned auto_increment primary key,
`password` binary(20) not null
);
CREATE TABLE `char` (
`id` int unsigned auto_increment primary key,
`password` char(40) not null
);
With million of records binary(20) takes 44.56M, whil...
Update relationships when saving changes of EF4 POCO objects
...ost to context. After attaching object to context the state of the object, all related objects and all relations is set to Unchanged.
Use context.ObjectStateManager.ChangeObjectState to set your BlogPost to Modified
Iterate through Tag collection
Use context.ObjectStateManager.ChangeRelationshipStat...
Python Graph Library [closed]
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I just evaluated both. networkx is installable via pip, whereas igraph is not. This makes igraph harder to use as dependencies in your setup.py files.
– exhuma
Aug 10 '12 at 7:46
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Android studio Gradle build speed up
...use gradle from the command line and you should switch to binary libs for all modules you do not develop. On g+ there is a discussion with the developers about it.
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How to ignore certain files in Git
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How to ignore new files
Globally
Add the path(s) to your file(s) which you would like to ignore to your .gitignore file (and commit them). These file entries will also apply to others checking out the repository.
Locally
Add the path(s) to your file(...
Is it better practice to use String.format over string Concatenation in Java?
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They are all bad practice. Use StringBuilder.
– Amir Raminfar
Aug 11 '11 at 16:37
10
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Import file size limit in PHPMyAdmin
I have changed all the php.ini parameters I know:
upload_max_filesize , post_max_size .
27 Answers
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Flatten an Array of Arrays in Swift
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Just to state this more generally, flatMap is available as of Swift 1.2.
– Mick MacCallum
Apr 24 '15 at 4:56
3
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Python Pandas merge only certain columns
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You can use .loc to select the specific columns with all rows and then pull that. An example is below:
pandas.merge(dataframe1, dataframe2.iloc[:, [0:5]], how='left', on='key')
In this example, you are merging dataframe1 and dataframe2. You have chosen to do an outer left jo...
When to use transclude 'true' and transclude 'element' in Angular?
...le the content of the element and make it available to the directive. Typically used with ngTransclude. The advantage of transclusion is that the linking function receives a transclusion function which is pre-bound to the correct scope. In a typical setup the widget creates an isolate scope, but the...