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Get record counts for all tables in MySQL database
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SELECT SUM(TABLE_ROWS)
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_SCHEMA = '{your_db}';
Note from the docs though: For InnoDB tables, the row count is only a rough estimate used in SQL optimization. You'll need to use COUNT(*) ...
How do I send a POST request as a JSON?
... 6]
}
req = urllib2.Request('http://example.com/api/posts/create')
req.add_header('Content-Type', 'application/json')
response = urllib2.urlopen(req, json.dumps(data))
Python 3.x
https://stackoverflow.com/a/26876308/496445
If you don't specify the header, it will be the default application/x...
rails 3 validation on uniqueness on multiple attributes
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In Rails 2, I would have written:
validates_uniqueness_of :zipcode, :scope => :recorded_at
In Rails 3:
validates :zipcode, :uniqueness => {:scope => :recorded_at}
For multiple attributes:
validates :zipcode, :uniqueness => {:scope => [:recorded_at...
Get TransactionScope to work with async / await
...on.Enabled))
{
// connection
using (var connection = new SqlConnection(_connectionString))
{
// open connection asynchronously
await connection.OpenAsync();
using (var command = connection.CreateCommand())
{
command.CommandText = ...;
// run command asynchronously...
docker error: /var/run/docker.sock: no such file or directory
... run the container.
I am on mac, installed boot2docker and have the DOCKER_HOST env set up.
11 Answers
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Is it possible to use AutoLayout with UITableView's tableHeaderView?
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- (void)viewDidLoad {
[super viewDidLoad];
// ....
dispatch_async(dispatch_get_main_queue(), ^{
_profileView = [[MyView alloc] initWithNib:@"MyView.xib"];
self.tableView.tableHeaderView = self.profileView;
});
}
Note: It fix the bug when the loaded view has a fi...
How do I rename the extension for a bunch of files?
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This worked for me on OSX from .txt to .txt_bak
find . -name '*.txt' -exec sh -c 'mv "$0" "${0%.txt}.txt_bak"' {} \;
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Android: how do I check if activity is running?
...r activityManager = (ActivityManager) ctx.getSystemService(Context.ACTIVITY_SERVICE);
List<RunningTaskInfo> tasks = activityManager.getRunningTasks(Integer.MAX_VALUE);
for (RunningTaskInfo task : tasks) {
if (ctx.getPackageName().equalsIgnoreCase(task.baseActivity....
AngularJS: Is there any way to determine which fields are making a form invalid?
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For checking which field of form is invalid
console.log($scope.FORM_NAME.$error.required);
this will output the array of invalid fields of the form
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Ruby - test for array
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You probably want to use kind_of().
>> s = "something"
=> "something"
>> s.kind_of?(Array)
=> false
>> s = ["something", "else"]
=> ["something", "else"]
>> s.kind_of?(Array)
=> true
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