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What is HEAD in Git?
...nce to a
commit object. Each head has a name
(branch name or tag name, etc). By
default, there is a head in every
repository called master. A repository
can contain any number of heads. At
any given time, one head is selected
as the “current head.” This head is
aliased to HEAD, a...
Failed to install Python Cryptography package with PIP and setup.py
... does not work on my windows10, getting build error cannot open include file: 'openssl/opensslv.h'
– Totte Karlsson
Jun 19 '18 at 18:35
...
Java - escape string to prevent SQL injection
... literals. If you create them any other way (e.g., by reading them from a file), you don't have to do all that double-escaping.
If you have a linefeed character in the input and you want to replace it with an escape sequence, you can make a second pass over the input with this:
s = s.replaceAll("...
Options for embedding Chromium instead of IE WebBrowser control with WPF/C#
...ed to be added into the GAC so no installer changes needed. Just copy your files and go. Did I mention CEF/CefSharp is better than every Mozilla/WebKit C# library I tested? Oh and for heavens sake don't use IE. It works. Yes, it does, but it is totally feature lacking and it performs very badly (spe...
How do I make a textbox that only accepts numbers?
...32 input (it could be easily adapted for other types such as System.Int64, etc.). It supports copy/paste operations and negative numbers:
public class Int32TextBox : TextBox
{
protected override void OnKeyPress(KeyPressEventArgs e)
{
base.OnKeyPress(e);
NumberFormatInfo fi ...
SQL - Select first 10 rows only?
...10 ...
MySQL
SELECT ... LIMIT 10
Sybase
SET ROWCOUNT 10
SELECT ...
Etc.
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Execution time of C program
...time.h. This is probably a bad idea, because this is what my /bits/time.h file says:
/* ISO/IEC 9899:1990 7.12.1: <time.h>
The macro `CLOCKS_PER_SEC' is the number per second of the value
returned by the `clock' function. */
/* CAE XSH, Issue 4, Version 2: <time.h>
The value of CLOCKS_...
Android: how to handle button click
... should separate your UI (XML) and computational functionality (Java Class Files). It also makes for easier debugging. It is actually a lot easier to read this way and think about Android imo.
Question 2:
I believe the two mainly used are #2 and #3. I will use a Button clickButton as an example.
2
i...
Mod of negative number is melting my brain
... definition (my answer) is consistent with ALGOL, Dart, Maple, Pascal, Z3, etc. The "sign of divisor" (this answer) is consistent with: APL, COBOL, J, Lua, Mathematica, MS Excel, Perl, Python, R, Ruby, Tcl, etc. Both are inconsistent with "sign of dividend" as in: AWK, bash, bc, C99, C++11, C#, D, E...
Java equivalent to Explode and Implode(PHP) [closed]
... Split does indeed use a regular expression (in PHP, Perl, Java, etc.). If you want to split on another symbol, it needs to be escaped, like this: String[] split = foo.split("\\(");
– HoldOffHunger
Jun 4 '17 at 22:40
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