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Differences in boolean operators: & vs && and | vs ||
I know the rules for && and || but what are & and | ? Please explain these to me with an example.
11 Ans...
How to use shared memory with Linux in C
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Haha I know what you mean, but it's actually because we're not used to reading manpages. When I learned to read them and got used to them, they became even more useful than lousy tutorials with particular demonstrations. I remember I...
JavaScript checking for null vs. undefined and difference between == and ===
...gain, note that the last one is vague; it will also be true if a is null.
Now, despite the above, the usual way to check for those is to use the fact that they're falsey:
if (!a) {
// `a` is falsey, which includes `undefined` and `null`
// (and `""`, and `0`, and `NaN`, and [of course] `f...
What is the better API to Reading Excel sheets in java - JXL or Apache POI [closed]
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I have used both JXL (now "JExcel") and Apache POI. At first I used JXL, but now I use Apache POI.
First, here are the things where both APIs have the same end functionality:
Both are free
Cell styling: alignment, backgrounds (colors and patte...
How can I include a YAML file inside another?
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This is now possible. I've added an answer below...hope it helps.
– daveaspinall
Aug 19 '15 at 9:39
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Pointers in C: when to use the ampersand and the asterisk?
I'm just starting out with pointers, and I'm slightly confused. I know & means the address of a variable and that * can be used in front of a pointer variable to get the value of the object that is pointed to by the pointer. But things work differently when you're working with arrays, string...
How to check an Android device is HDPI screen or MDPI screen?
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The below answer is now the above answer, need to be more generic ;)
– Neil
Oct 3 '12 at 11:58
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How to create enum like type in TypeScript?
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This should now be the accepted answer since it is still working in the RC and is therefore unlikely to break with future versions of TS.
– Adrian Grigore
Mar 6 '14 at 17:18
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How do I recover/resynchronise after someone pushes a rebase or a reset to a published branch?
... Quick note: I think it's pretty intuitive, but if you don't know awk well... that one-liner is just looking through the output of git reflog show origin/foo for the first line saying "fetch: forced-update"; that's what git records when a fetch causes the remote branch to do anything bu...
List of Rails Model Types
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I think this might be a more accurate link, now api.rubyonrails.org/classes/ActiveRecord/ConnectionAdapters/…
– Randy Burgess
Aug 12 '13 at 21:42
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