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How do I make a simple makefile for gcc on Linux?
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Interesting, I didn't know make would default to using the C compiler given rules regarding source files.
Anyway, a simple solution that demonstrates simple Makefile concepts would be:
HEADERS = program.h headers.h
default: program
progr...
Get Base64 encode file-data from Input Form
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It's entirely possible in browser-side javascript.
The easy way:
The readAsDataURL() method might already encode it as base64 for you. You'll probably need to strip out the beginning stuff (up to the first ,), but that's no biggie. This would take all the fu...
mingw-w64 threads: posix vs win32
...mpiler runtime library (libgcc) which it uses for (among other things) providing a low-level OS abstraction for multithreading related functionality in the languages it supports. The most relevant example is libstdc++'s C++11 <thread>, <mutex>, and <future>, which do not have a com...
What's the difference between NOT EXISTS vs. NOT IN vs. LEFT JOIN WHERE IS NULL?
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Assuming you are avoiding nulls, they are all ways of writing an anti-join using Standard SQL.
An obvious omission is the equivalent using EXCEPT:
SELECT a FROM table1
EXCEPT
SELECT a FROM table2
Note in Oracle you need to use the MINUS oper...
Why are we not to throw these exceptions?
...ption). Similarly, IndexOutOfRangeExceptions occur when you access an invalid index (on arrays—not lists). You should always make sure that you don’t do that in the first place and check the boundaries of e.g. an array first.
There are a few other exceptions like those two, for example InvalidC...
Which “href” value should I use for JavaScript links, “#” or “javascript:void(0)”?
...ript code. Which is better, in terms of functionality, page load speed, validation purposes, etc.?
54 Answers
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Do HTML WebSockets maintain an open connection for each client? Does this scale?
...urces. Often setting up the connection can be expensive but maintaining an idle connection it is almost free. The first limitation that is usually encountered is the maximum number of file descriptors (sockets consume file descriptors) that can be open simultaneously. This often defaults to 1024 but...
How much space can your BitBucket account have?
... they allow you to have unlimited public/private repositories. However, I didn't find the size limit of your account? Does anyone know where to find it? Github offered 300mb if I remember correctly.
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JavaScript ternary operator example with functions
... impacting readability. The only word of advice I would give you is to avoid nesting multiple ternary statements on the same line (that way lies madness!)
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How can I programmatically generate keypress events in C#?
...se the following method,
[DllImport("user32.dll")]
public static extern void keybd_event(byte bVk, byte bScan, uint dwFlags, uint dwExtraInfo);
sample code is given below:
const int VK_UP = 0x26; //up key
const int VK_DOWN = 0x28; //down key
const int VK_LEFT = 0x25;
const int VK_RIGHT = 0x27;
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