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Mac OS: xcrun: error: invalid active developer path, missing xcrun

I ran into this error when I tried any git operation (like git clone and git pull) on a Mac. I had just upgraded to the latest OS (Catalina)to and suddenly my git broke!

$ git pull xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun

The fix, luckily, is pretty straight forward. Install the Xcode…

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Windows Shortcuts

Run Commands: compmgmt.msc - Computer management devmgmt.msc - Device manager diskmgmt.msc - Disk management dfrg.msc - Disk defrag eventvwr.msc - Event viewer fsmgmt.msc - Shared folders gpedit.msc - Group policies lusrmgr.msc - Local users and groups perfmon.msc - Performance monitor rsop.msc - Resultant set of policies secpol.msc - Local security settings services.msc - Various…

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AWS CDK - Code Pipeline Artifacts Bucket Encryption Key Alias already exists

AWS CDK – Code Pipeline Artifacts Bucket Encryption Key Alias already exists

Pipeline/ArtifactsBucketEncryptionKeyAlias (PipelineArtifactsBucketEncryptionKeyAlias5C510EEE) alias/codepipeline-pnsforfcmpipeline7fad1cb5 already exists aws kms delete-alias --alias-name alias/codepipeline-pnsforfcmpipeline7fad1cb5

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aws cdk install or upgrade cli

The mentioned command will install or upgrade for AWS CDK

npm install -g aws-cdk

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type annotations in Python

Python 3.5+ supports ‘type annotations’ that can be used with tools like below example to write statically typed Python

def my_add(a: int, b: int) -> int: return a + b

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Different ways to test multiple flags at once in Python

# Different ways to test multiple # flags at once in Python x, y, z = 0, 1, 0 if x == 1 or y == 1 or z == 1: print('passed') if 1 in (x, y, z): print('passed') # These only test for truthiness: if x or y or z: print('passed') if any((x, y, z)): print('passed')

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#Python

How to validate max method from another field value?

$(document).ready(function () { $("#frm").validate({ rules: { field2: { required: true, max: function () { return parseInt($('#field1').val()); } } } }); });

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How to Print Without Newline or Space in Python

use the argument “end” to specify the end of line string

print("Hello ", end = '') print("World...!")

Output:

Hello World…!

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#Python

How to check if a variable is a dictionary in Python?

You could use if type(ele) is dict or use isinstance(ele, dict) which would work if you had subclassed dict:

l1 = { 'a': 'A', 'b': 'B', 'c': 'C', 'd': 'D', 'e':{'x':'X'} } for i, v in l1.items(): print('Key: {} and Value: {}'.format(i, v)) if(isinstance(v, dict)): print('The Value is a dict')

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How can i run my second file in repl.it

For example the second file name is test.py

from test import *

Add mentioned line in main.py

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#Python #repl.it

CondaHTTPError: HTTP 000 CONNECTION FAILED

C:\Users\ProbeQA>conda update anaconda-navigator Collecting package metadata: failed

CondaHTTPError: HTTP 000 CONNECTION FAILED for url <https://repo.anaconda.com/pkgs/free/noarch/repodata.json.bz2> Elapsed: –

An HTTP error occurred when trying to retrieve this URL. HTTP errors are often intermittent, and a simple retry will get you on your way.

If your current network has https://www.anaconda…

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#Anaconda #Python

How to convert a negative number to a positive number with PHP?

abs — Absolute value

The abs() fuction is a built-in function in PHP and is used to return the absolute (positive) value of a number.

If the argument number is of type float, the return type is also float, otherwise it is integer (as float usually has a bigger value range than integer).

$positiveNumber = abs(-1234); // = 1234 $positiveNumber = abs(1234); // = 1234 $positiveNumber = abs(1234.12);…

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#PHP

If condition in Python

if True: print "True" else: print "False"

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#Python

Django Error except(KeyError, choice.DoesNotExist) - Python 3.7.0

Django Error except(KeyError, choice.DoesNotExist) – Python 3.7.0

Below code will works. I’m also facing same issue, : (Colon) is missed

def vote(request, question_id): question = get_object_or_404(Question, pk=question_id) try: selected_choice = question.choice_set(pk.request.POST['choicee']) except(KeyError, choice.DoesNotExist): return render(request, 'polls/detail.html', { 'question': question, 'error_message': "You…

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How To Remove or Change The ‘Proudly Powered By WordPress’ Text In The Footer Of Twenty Seventeen

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How to set min time Daterangepicker?

Date.prototype.addHours = function(h) { this.setTime(this.getTime() + (h*60*60*1000)); return this; } var currDate = new Date().addHours(5); // 5 is the hours $('#fromDate').daterangepicker({ minDate: currDate, timePicker: true, singleDatePicker: true, timePickerIncrement: 1, format: 'DD/MM/YYYY hh:mm A' });

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php more than 1000 or 2500 fields not posting

By changing max_input_vars size to achieve this issue.

max_input_vars integer

How many input variables may be accepted (limit is applied to $_GET, $_POST and $_COOKIE superglobal separately). Use of this directive mitigates the possibility of denial of service attacks which use hash collisions. If there are more input variables than specified by this directive, an E_WARNING is issued, and further…

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#Configuration #HTML #PHP

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