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'Java' is not recognized as an internal or external command

... You need to configure your environment variables, JAVA_HOME and PATH. JAVA_HOME must contain the path to java, and you should add %JAVA_HOME%\bin to PATH Alternatively, you can simply add to your PATH the whole path to the bin folder, without the JAVA_HOME variable, however, t...
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What is __pycache__?

... it to bytecode first (this is an oversimplification) and stores it in the __pycache__ folder. If you look in there you will find a bunch of files sharing the names of the .py files in your project's folder, only their extensions will be either .pyc or .pyo. These are bytecode-compiled and optimized...
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Custom Drawable for ProgressBar/ProgressDialog

...e following for creating a custom progress bar. File res/drawable/progress_bar_states.xml declares the colors of the different states: <layer-list xmlns:android="http://schemas.android.com/apk/res/android"> <item android:id="@android:id/background"> <shape> ...
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How to add http:// if it doesn't exist in the URL?

... A modified version of @nickf code: function addhttp($url) { if (!preg_match("~^(?:f|ht)tps?://~i", $url)) { $url = "http://" . $url; } return $url; } Recognizes ftp://, ftps://, http:// and https:// in a case insensitive way. ...
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How do you send a HEAD HTTP request in Python 2?

...rt urllib2 >>> class HeadRequest(urllib2.Request): ... def get_method(self): ... return "HEAD" ... >>> response = urllib2.urlopen(HeadRequest("http://google.com/index.html")) Headers are available via response.info() as before. Interestingly, you can find the URL th...
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pyplot axes labels for subplots

...tplotlib.pyplot as plt x = range(1, 101) y1 = [random.randint(1, 100) for _ in xrange(len(x))] y2 = [random.randint(1, 100) for _ in xrange(len(x))] fig = plt.figure() ax = fig.add_subplot(111) # The big subplot ax1 = fig.add_subplot(211) ax2 = fig.add_subplot(212) # Turn off axis lines and ti...
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UITableViewCell, show delete button on swipe

...ource = self } // number of rows in table view func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int { return self.animals.count } // create a cell for each table view row func tableView(_ tableView: UITableView, cellForRowAt indexPa...
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What does a colon following a C++ constructor name do? [duplicate]

...olon operator (":") do in this constructor? Is it equivalent to MyClass(m_classID = -1, m_userdata = 0); ? 9 Answers ...
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What is the canonical way to determine commandline vs. http execution of a PHP script?

... Use the php_sapi_name() function. if (php_sapi_name() == "cli") { // In cli-mode } else { // Not in cli-mode } Here are some relevant notes from the docs: php_sapi_name — Returns the type of interface between web server...
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Get nth character of a string in Swift programming language

...vailable also to the substrings: extension StringProtocol { subscript(_ offset: Int) -> Element { self[index(startIndex, offsetBy: offset)] } subscript(_ range: Range<Int>) -> SubSequence { prefix(range.lowerBound+range.count).suffix(range.c...