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Showing posts from September, 2019

Append To An Empty List Using A Single Line For-loop Python

Answer : Write a proper comprehension, without append. >>> [i for i in range(10)] [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] >>> list(i for i in range(10)) [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

Change .pem To .ppk Code Example

Example: convert pem to ppk Convert .pem to .ppk file format Using Putty(Windows) To convert the .pem file .ppk follow below points 1. First you need to download Putty from here. 2. Then run puttygen to convert .PEM file to .PPK file. 3. Start puttygen and select “Load” 4. Select your .PEM file. 5. Putty will convert the .PEM format to .PPK format. 6. Select “Save Private Key” A passphrase is not required but can be used if additional security is required.

Android Selector & Text Color

Answer : I got by doing several tests until one worked, so: res/color/button_dark_text.xml <?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:state_pressed="true" android:color="#000000" /> <!-- pressed --> <item android:state_focused="true" android:color="#000000" /> <!-- focused --> <item android:color="#FFFFFF" /> <!-- default --> </selector> res/layout/view.xml <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <Button android:layout_width="wrap_content" and

Clipboard Manager For Mac

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Answer : UPDATE I have actually now started using Clippings from the app store. It's $2.99 and worth it. The reasons I decided to stop using PTHPasteboard were that it is a little buggy and I tried to send feedback to the author but never heard anything. Also it is expensive at $25. Wish the author was continuing development and taking requests for a couple of UI/UX fixes, but until then I really like "Clippings" ORIGINAL POST I'm coming from Windows and LOVED the Ditto clipboard manager. It was SO SIMPLE and powerful. Wish I could find the same thing for Mac. I first tried ClipMenu and Jumpcut , and have also tried using Quicksilver 's built in clipboard manager. I have not been too happy with any of them. I also looked at a few articles describing the so called best clipboard manager for mac, like this one. The closest one I could find was Clyppan ($5) until I found this question and tried PTH Pasteboard as Mark had suggested. Here's the

Bootstrap Forms Examples

Example 1: bootstrap forms < form > < div class = "form-group" > < label for = "exampleInputEmail1" > Email address < / label > < input type = "email" class = "form-control" id = "exampleInputEmail1" aria - describedby = "emailHelp" placeholder = "Enter email" > < small id = "emailHelp" class = "form-text text-muted" > We'll never share your email with anyone else . < / small > < / div > < div class = "form-group" > < label for = "exampleInputPassword1" > Password < / label > < input type = "password" class = "form-control" id = "exampleInputPassword1" placeholder = "Password" > < / div > < div class = "form-check" > < input type = "checkbox" class = "form-check-input

C Strlen Example

Defined in header <string.h> size_t strlen ( const char * str ) ; (1) size_t strnlen_s ( const char * str , size_t strsz ) ; (2) (since C11) 1) Returns the length of the given null-terminated byte string, that is, the number of characters in a character array whose first element is pointed to by str up to and not including the first null character. The behavior is undefined if str is not a pointer to a null-terminated byte string. 2) Same as (1) , except that the function returns zero if str is a null pointer and returns strsz if the null character was not found in the first strsz bytes of str . The behavior is undefined if both str points to a character array which lacks the null character and the size of that character array < strsz ; in other words, an erroneous value of strsz does not expose the impending buffer overflow. As with all bounds-checked functions, strnlen_s is only guaranteed to be available if __S

Bootstrap-datetimepicker Bootstrap 4 Code Example

Example 1: date picker for bootstrap 4 < input class = " datepicker " data-date-format = " mm/dd/yyyy " > Example 2: date picker for bootstrap 4 $('.datepicker').datepicker({ format: 'mm/dd/yyyy', startDate: '-3d' }); Example 3: date picker for bootstrap 4 < div class = " input-group date " data-provide = " datepicker " > < input type = " text " class = " form-control " > < div class = " input-group-addon " > < span class = " glyphicon glyphicon-th " > </ span > </ div > </ div > Example 4: bootstrap datepicker < div class = " container " > < div class = " row " > < div class = ' col-sm-6 ' > < div class = " form-group " > < div class = ' input-group date ' id = ' datetim

Basic Confusion About How Transistors Work

Answer : The sentence is talking about the voltage between two points. It says the voltage at the base must be 0.7V higher than the voltage at the emitter. This is comparing the voltage between two points - the base and the emitter. You can measure this voltage by putting one multimeter probe at the base, and the other at the emitter, and seeing if the multimeter reads higher than 0.7V. You could also measure the same voltage by putting one multimeter probe on the negative terminal of the battery, and the other one on the base, reading the display, then putting the second probe on the emitter, reading the display again, and then subtracting the emitter reading from the base reading. Or you could use the positive terminal. Or any other good "fixed-voltage" point in your circuit (an audio signal would not work because it would change in between the readings). It gets rather tedious when describing a circuit if you have to keep saying what two points you are measuring be

Assign Null To A SqlParameter

Answer : The problem is that the ?: operator cannot determine the return type because you are either returning an int value or a DBNull type value, which are not compatible. You can of course cast the instance of AgeIndex to be type object which would satisfy the ?: requirement. You can use the ?? null-coalescing operator as follows SqlParameter[] parameters = new SqlParameter[1]; SqlParameter planIndexParameter = new SqlParameter("@AgeIndex", SqlDbType.Int); planIndexParameter.Value = (object)AgeItem.AgeIndex ?? DBNull.Value; parameters[0] = planIndexParameter; Here is a quote from the MSDN documentation for the ?: operator that explains the problem Either the type of first_expression and second_expression must be the same, or an implicit conversion must exist from one type to the other. The accepted answer suggests making use of a cast. However, most of the SQL types have a special Null field which can be used to avoid this cast. For example

Black Sheep Top List Bot Code Example

Example: black sheep discord Black Sheep Is the best Discord Bot To Ever Exist It's in 1000+ servers You can read more here - http://bit.ly/botsheep

2x2 Matrix Multiplication In C Code Example

Example 1: matrix multiplication in c # include <stdio.h> // function to get matrix elements entered by the user void getMatrixElements ( int matrix [ ] [ 10 ] , int row , int column ) { printf ( "\nEnter elements: \n" ) ; for ( int i = 0 ; i < row ; ++ i ) { for ( int j = 0 ; j < column ; ++ j ) { printf ( "Enter a%d%d: " , i + 1 , j + 1 ) ; scanf ( "%d" , & matrix [ i ] [ j ] ) ; } } } // function to multiply two matrices void multiplyMatrices ( int first [ ] [ 10 ] , int second [ ] [ 10 ] , int result [ ] [ 10 ] , int r1 , int c1 , int r2 , int c2 ) { // Initializing elements of matrix mult to 0. for ( int i = 0 ; i < r1 ; ++ i ) { for ( int j = 0 ; j < c2 ; ++ j ) { result [ i ] [ j ] = 0 ; } } // Multiplying