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Tweaking select docs
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@ -2,26 +2,6 @@
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Select is used to filter arrays and maps by a boolean expression.
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Select is used to filter arrays and maps by a boolean expression.
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## Select elements from array with regular expression
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See more regular expression examples under the `string` operator docs.
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Given a sample.yml file of:
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```yaml
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- this_0
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- not_this
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- nor_0_this
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- thisTo_4
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```
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then
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```bash
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yq eval '.[] | select(test("[a-zA-Z]+_[0-9]$"))' sample.yml
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```
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will output
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```yaml
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this_0
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thisTo_4
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```
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## Select elements from array using wildcard prefix
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## Select elements from array using wildcard prefix
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Given a sample.yml file of:
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Given a sample.yml file of:
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```yaml
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```yaml
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@ -75,6 +55,26 @@ go
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going
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going
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```
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```
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## Select elements from array with regular expression
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See more regular expression examples under the `string` operator docs.
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Given a sample.yml file of:
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```yaml
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- this_0
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- not_this
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- nor_0_this
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- thisTo_4
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```
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then
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```bash
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yq eval '.[] | select(test("[a-zA-Z]+_[0-9]$"))' sample.yml
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```
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will output
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```yaml
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this_0
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thisTo_4
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```
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## Select items from a map
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## Select items from a map
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Given a sample.yml file of:
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Given a sample.yml file of:
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```yaml
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```yaml
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@ -92,7 +92,7 @@ cat
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dog
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dog
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```
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```
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## Use select + with_entries to filter map keys
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## Use select and with_entries to filter map keys
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Given a sample.yml file of:
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Given a sample.yml file of:
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```yaml
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```yaml
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name: bob
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name: bob
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@ -27,16 +27,6 @@ var selectOperatorScenarios = []expressionScenario{
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expression: `select(false)`,
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expression: `select(false)`,
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expected: []string{},
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expected: []string{},
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},
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},
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{
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description: "Select elements from array with regular expression",
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subdescription: "See more regular expression examples under the `string` operator docs.",
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document: `[this_0, not_this, nor_0_this, thisTo_4]`,
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expression: `.[] | select(test("[a-zA-Z]+_[0-9]$"))`,
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expected: []string{
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"D0, P[0], (!!str)::this_0\n",
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"D0, P[3], (!!str)::thisTo_4\n",
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},
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},
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{
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{
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description: "Select elements from array using wildcard prefix",
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description: "Select elements from array using wildcard prefix",
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document: `[cat,goat,dog]`,
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document: `[cat,goat,dog]`,
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@ -65,6 +55,16 @@ var selectOperatorScenarios = []expressionScenario{
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"D0, P[3], (!!str)::going\n",
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"D0, P[3], (!!str)::going\n",
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},
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},
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},
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},
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{
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description: "Select elements from array with regular expression",
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subdescription: "See more regular expression examples under the `string` operator docs.",
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document: `[this_0, not_this, nor_0_this, thisTo_4]`,
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expression: `.[] | select(test("[a-zA-Z]+_[0-9]$"))`,
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expected: []string{
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"D0, P[0], (!!str)::this_0\n",
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"D0, P[3], (!!str)::thisTo_4\n",
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},
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},
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{
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{
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skipDoc: true,
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skipDoc: true,
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document: "a: hello",
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document: "a: hello",
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@ -107,7 +107,7 @@ var selectOperatorScenarios = []expressionScenario{
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},
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},
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},
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},
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{
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{
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description: "Use select + with_entries to filter map keys",
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description: "Use select and with_entries to filter map keys",
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document: `{name: bob, legs: 2, game: poker}`,
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document: `{name: bob, legs: 2, game: poker}`,
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expression: `with_entries(select(.key | test("ame$")))`,
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expression: `with_entries(select(.key | test("ame$")))`,
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expected: []string{
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expected: []string{
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