Tarik If you’ve previously installed create-react-app globally via npm install -g create-react-app, we recommend you uninstall the package using npm uninstall -g create-react-app to ensure that npx always uses the latest version. Docs Use either one of the below commands: npx create-react-app my-app npm init react-app my-app yarn create react-app my-app if npm uninstall -g create-react-app … Read more
You can easily add a second legend by adding the line: ax2.legend(loc=0) You’ll get this: But if you want all labels on one legend then you should do something like this: import numpy as np import matplotlib.pyplot as plt from matplotlib import rc rc(‘mathtext’, default=”regular”) time = np.arange(10) temp = np.random.random(10)*30 Swdown = np.random.random(10)*100-10 Rn … Read more
grep -Fxq “$FILENAME” my_list.txt The exit status is 0 (true) if the name was found, 1 (false) if not, so: if grep -Fxq “$FILENAME” my_list.txt then # code if found else # code if not found fi Explanation Here are the relevant sections of the man page for grep: grep [options] PATTERN [FILE…] -F, –fixed-strings … Read more
Here’s how I’d do it… writeToParcel: dest.writeByte((byte) (myBoolean ? 1 : 0)); //if myBoolean == true, byte == 1 readFromParcel: myBoolean = in.readByte() != 0; //myBoolean == true if byte != 0
UPDATE 23/Dec/2015: Since this answer seems to be getting a lot of upvotes, I’ve updated it to fix silly bugs and to generally improve the code based upon comments and feedback. See the end of the post for a list of specific improvements. As other people have said, Cryptography is not simple so it’s best … Read more
You can use $x in the Chrome javascript console. No extensions needed. ex: $x(“//img”) Also the search box in the web inspector will accept xpath
Creating a concurrent queue let concurrentQueue = DispatchQueue(label: “queuename”, attributes: .concurrent) concurrentQueue.sync { } Create a serial queue let serialQueue = DispatchQueue(label: “queuename”) serialQueue.sync { } Get main queue asynchronously DispatchQueue.main.async { } Get main queue synchronously DispatchQueue.main.sync { } To get one of the background thread DispatchQueue.global(qos: .background).async { } Xcode 8.2 beta 2: … Read more
You can use the viewport value instead of ems, pxs, or pts: 1vw = 1% of viewport width 1vh = 1% of viewport height 1vmin = 1vw or 1vh, whichever is smaller 1vmax = 1vw or 1vh, whichever is larger h1 { font-size: 5.9vw; } h2 { font-size: 3.0vh; } p { font-size: 2vmin; } … Read more
var dict = []; // create an empty array dict.push({ key: “keyName”, value: “the value” }); // repeat this last part as needed to add more key/value pairs Basically, you’re creating an object literal with 2 properties (called key and value) and inserting it (using push()) into the array. Edit: So almost 5 years later, … Read more
I found this script on this site and it seems to work quite well. Copy over your .git directory to your web server On your local copy, modify your .git/config file and add your web server as a remote: [remote “production”] url = username@webserver:/path/to/htdocs/.git On the server, replace .git/hooks/post-update with this file (in the answer … Read more