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Email Address Validation in Android on EditText [duplicate]

...Message); final TextView textView = (TextView)findViewById(R.id.text); String email = emailValidate.getText().toString().trim(); String emailPattern = "[a-zA-Z0-9._-]+@[a-z]+\\.+[a-z]+"; emailValidate .addTextChangedListener(new TextWatcher() { public void afterTextChanged(Editable s) { ...
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Trusting all certificates using HttpClient over HTTPS

...er() { public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException { } public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException { } public X509Certificat...
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Kill child process when parent process is killed

...Set = CharSet.Unicode)] static extern IntPtr CreateJobObject(object a, string lpName); [DllImport("kernel32.dll")] static extern bool SetInformationJobObject(IntPtr hJob, JobObjectInfoType infoType, IntPtr lpJobObjectInfo, uint cbJobObjectInfoLength); [DllImport("kernel32.dll", Set...
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How many Activities vs Fragments?

...tent.setClass(getActivity(), DetailsActivity.class); intent.putExtra("index", index); startActivity(intent); } } Another advantage of the ABS pattern is that you do not end up with a Tablet Activity containing lots of logic, and that means that you save memory...
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Forward host port to docker container

... MacOS only hostname docker.for.mac.host.internal instead of localhost. No extra parameters are needed to docker run for this to work. You can pass this in as an env var using -e if you want to keep your container platform agnostic. That way you can connect to the host named in the env var and pass...
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What does -> mean in Python function definitions?

... It's a function annotation. In more detail, Python 2.x has docstrings, which allow you to attach a metadata string to various types of object. This is amazingly handy, so Python 3 extends the feature by allowing you to attach metadata to functions describing their parameters and return ...
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MySQL “incorrect string value” error when save unicode string in Django

...code_escape') >>> Slatkevičius Is this the only method to save strings like that into a MySQL table and decode it before rendering to templates for display? share | improve this answer ...
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Generating a random password in php

...tor. Look elsewhere for generating a cryptographically secure pseudorandom string in PHP. Try this (use strlen instead of count, because count on a string is always 1): function randomPassword() { $alphabet = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890'; $pass = array(...
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How to replace NaN values by Zeroes in a column of a Pandas Dataframe?

... Easy way to fill the missing values:- filling string columns: when string columns have missing values and NaN values. df['string column name'].fillna(df['string column name'].mode().values[0], inplace = True) filling numeric columns: when the numeric columns have miss...
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How to set a Django model field's default value to a function call / callable (e.g., a date relative

... new_profile.save() def create_auth_token(self): import random, string auth = self.user.username[:4] # get first 4 characters in user name self.auth_token = auth + ''.join(random.SystemRandom().choice(string.ascii_uppercase + string.digits + string.ascii_lowercase) for _ in range...