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How do I update pip itself from inside my virtual environment?
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Same here, that's the only way that works for me on Debian. Using python or pip to upgrade pip from within the virtualenv would fail because it refused to uninstall existing pip sitting outside the venv.
– user3748764
Sep 28 '17...
Why is it Valid to Concatenate Null Strings but not to Call “null.ToString()”?
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The reason for first one working:
From MSDN:
In string concatenation operations,the C# compiler treats a null string the same as an empty string, but it does not convert the value of the original null string.
More information on the +...
How do I Search/Find and Replace in a standard string?
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Why is this not an actual for loop, rather than an obfuscated for loop?
– Shirik
Aug 21 '12 at 18:44
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Commands out of sync; you can't run this command now
...wo simultaneous queries because mysqli uses unbuffered queries by default (for prepared statements; it's the opposite for vanilla mysql_query). You can either fetch the first one into an array and loop through that, or tell mysqli to buffer the queries (using $stmt->store_result()).
See here for...
What does this symbol mean in JavaScript?
...r alternatives:
!function(){…}(); - What does the exclamation mark do before the function?
+function(){…}(); - JavaScript plus sign in front of function expression
!function(){ }() vs (function(){ })(), ! vs leading semicolon
(function(window, undefined){…}(window));
someFunction()() —...
Open an IO stream from a local file or url
...losure like that will keep the file descriptor open. This may be a problem for some usages.
– Aaron Hinni
Feb 17 '14 at 3:57
19
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How to sort Map values by key in Java?
I have a Map that has strings for both keys and values.
15 Answers
15
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Sending message through WhatsApp
...ample: https://wa.me/15551234567?text=I'm%20interested%20in%20your%20car%20for%20sale
Original answer
Here is the solution
public void onClickWhatsApp(View view) {
PackageManager pm=getPackageManager();
try {
Intent waIntent = new Intent(Intent.ACTION_SEND);
waIntent.s...
Play an audio file using jQuery when a button is clicked
...t to detect our file is ready to be played.
There is no .stop() function for audio elements. We can only pause them. And when we want to start from the beginning of the audio file we change its .currentTime. We will use this line in our example audioElement.currentTime = 0;. To achieve .stop() fun...
Intellij idea cannot resolve anything in maven
...ng was selected:
Import Maven projects automatically
Create IDEA modules for aggregator projects
Keep source...
Exclude build dir...
Use Maven output...
Generated souces folders: "detect automatically"
Phase to be...: "process-resources"
Automatically download: "sources" & "documentation"
Use ...