conditional-statements

Terraform conditional block based on environment

我的未来我决定 提交于 2019-12-03 22:36:37
I'm looking at using the new conditionals in Terraform v0.11 to basically turn a config block on or off depending on the evnironment. Here's the block that I'd like to make into a conditional, if, for example I have a variable to turn on for production. access_logs { bucket = "my-bucket" prefix = "${var.environment_name}-alb" } I think I have the logic for checking the environment conditional, but I don't know how to stick the above configuration into the logic. "${var.environment_name == "production" ? 1 : 0 }" Is it possible to turn the access_logs block on and off via the environment_name

C Confused on how to initialize and implement a pthread mutex and condition variable

帅比萌擦擦* 提交于 2019-12-03 21:43:34
I'm a little bit confused on how to initialize and implement a pthread mutex and condition variable. The goal of the program is to have producers place a set number of ints in a queue and consumers take the ints out of the queue. I must also be able to define the number of producer and consumer threads that are created. In the starter code, I am give these: // Locks & Condition Variables pthread_mutex_t lock; // Lock shared resources among theads pthread_cond_t full; // Condition indicating queue is full pthread_cond_t empty; // Condition indicating queue is empty as shared resources. In the /

How to check whether a str(variable) is empty or not?

若如初见. 提交于 2019-12-03 18:28:00
问题 How do I make a: if str(variable) == [contains text]: condition? (or something, because I am pretty sure that what I just wrote is completely wrong) I am sort of trying to check if a random.choice from my list is ["",] (blank) or contains ["text",] . 回答1: You could just compare your string to the empty string: if variable != "": etc. But you can abbreviate that as follows: if variable: etc. Explanation: An if actually works by computing a value for the logical expression you give it: True or

What is the purpose of using WHERE 1=1 in SQL statements? [duplicate]

蓝咒 提交于 2019-12-03 16:46:28
问题 This question already has answers here : Closed 10 years ago . Possible Duplicates: Why would a sql query have “where 1 = 1” Why would someone use WHERE 1=1 AND <conditions> in a SQL clause? I've seen that a lot in different query examples and it goes to probably all SQL engines. If there is a query that has no conditions defined people (and specially ORM frameworks) often add always-true condition WHERE 1 = 1 or something like that. So instead of SELECT id, name FROM users; they use SELECT

Rails Date compared to Date.today

痴心易碎 提交于 2019-12-03 16:26:02
I have a birth_date variable in the Date format. I want to compare it to Date.today as shown below. The problem is it is coming back false because it wants to compare the year as well. It is a birthday so I don't care about the year just trying to see if birth_date (month and day) is equal to Date.today.day.month. Any ideas? bdays = Soldier.find(:all, :conditions => ["birth_date LIKE ?", Date.today] ) You will need to break up your date, because you want to ignore the year. You will need to use some of the functions given by your SQL provider (the example below uses MySQL): bdays = Soldier

Ways to Find a Race Condition

◇◆丶佛笑我妖孽 提交于 2019-12-03 15:20:23
问题 I have a bit of code with a race condition in it... I know that it is a race condition because it does not happen consistently, and it seems to happen more often on dual core machines. It never happens when I'm tracing. Although, there is a possibility that it could be a deadlock as well. By analyzing stages of completion of logs where this does and does not occur, I've been able to pinpoint this bug to a single function. However, I do not know where in the scope of the function this is

Adding find condition to all Active Record Models in Rails

蓝咒 提交于 2019-12-03 15:10:20
Is there anyway to add a find condition to all Active record models? that is I would like this query ExampleModel.find :all, :conditions=> ["status = ?", "active"] to behave the same way as ExampleModel.find :all in every model Thanks!! You could use default_scope : class ExampleModel < ActiveRecord::Base default_scope :conditions => ["status = ?", "active"] end If you want to use this in all your models, you can either subclass ActiveRecord::Base and derive from that in all your models (probably doesn't work well with single-table inheritance): class MyModel < ActiveRecord::Base default_scope

cakephp find all condition AND OR

妖精的绣舞 提交于 2019-12-03 13:24:22
问题 Below is my condition: 'OR' => array( 'AND' => array( array('EventCompetitor.is_black' => 1), array('EventCompetitor.is_adult' => 1) ), 'AND' => array( array('EventCompetitor.is_black' => 0), array('EventCompetitor.is_adult' => 0) ), ), When I debug my query, it comes something like this, which is wrong: AND ((`EventCompetitor`.`is_black` = 0) AND (`EventCompetitor`.`is_adult` = 0)) AND Now, that's not what I want, I want it something like this: ((`EventCompetitor`.`is_black` = 1) AND (

LINQ WHERE statement/ignore conditions

我怕爱的太早我们不能终老 提交于 2019-12-03 13:18:17
I need to ignore some or all conditions in WHERE statement if parameter is null or empty F.E: I have simple LINQ query var query = from x in context.a where x.p == param1 && x.i == param2 select x; How can I ignore x.p == param1 if param1 is null or emty? EDIT Tried this var query = from myLog in myContext.ApsValidationLogs where (myLog.systemtype == comboBoxSystemType.SelectedItem.ToString() || string.IsNullOrEmpty(comboBoxSystemType.SelectedItem.ToString())) && (myLog.bankid == comboBoxBankId.SelectedItem.ToString() || string.IsNullOrEmpty(comboBoxBankId.SelectedItem.ToString()))) select

Conditional breakpoint by caller in Java eclipse

試著忘記壹切 提交于 2019-12-03 12:59:45
I am trying to track a change of a value using watchpoint in a Java program in Eclipse debugger. The class hierarchy is pretty complex and the value I am tracking is wrapped in container, which is used on many places. To be more specific, there is a container SizeRequirement , which has a property minimum , which I am tracking. This class is used by many layout managers on many places for many components to define requirement for component's sizes. I need to catch exact call, where the value changes/is set for one specific layout manager and one specific component in it. Is it possible to