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startswith(str, prefix) returns true if str starts with prefix, and false otherwise.

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Signature

startswith(str string, prefix string) bool

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Example

Run the full staging pipeline only when the branch is a feature branch: 
variable "branch" {
  description = "Current git branch"
  type        = string
}

task "deploy-preview" {
  description = "Deploy a preview environment for feature branches"
  condition   = startswith(var.branch, "feature/")
  commands = [
    "docker build -t myapp:preview-${replace(var.branch, "/", "-")} .",
    "kubectl apply -f k8s/preview/",
  ]
}
The task runs only when branch starts with feature/.

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Notes

  • The comparison is case-sensitive. Use lower on both arguments for a case-insensitive check.
  • Returns false when prefix is longer than str.