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Verifying that a string contains only letters in C#
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Iterate through strings characters and use functions of 'Char' called 'IsLetter' and 'IsDigit'.
If you need something more specific - use Regex class.
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Convert string[] to int[] in one line of code using LINQ
...se);
A LINQ solution is similar, except you would need the extra ToArray call to get an array:
int[] myInts = arr.Select(int.Parse).ToArray();
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How do you list the active minor modes in emacs?
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add-to-list inside map? convoluted.
– jrockway
Oct 3 '09 at 3:30
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Comet and jQuery [closed]
...x protocol and currently supports long-polling (local server via AJAX) and callback-polling (remote server via XSS). There is a Bayeux implementation for Python called cometd-twisted that I have heard my plugin works with, but I have not verified this. I have tested and verified it works with cometd...
How can I check if a view is visible or not in Android? [duplicate]
...xact point of confusion is the imageView.getLocalVisibleRect(scrollBounds) call. From grepcode: public final boolean getLocalVisibleRect(Rect r) { Point offset = new Point(); if (getGlobalVisibleRect(r, offset)) { r.offset(-offset.x, -offset.y); // make r local ...
error LNK2019: unresolved external symbol _WinMain@16 referenced in function ___tmainCRTStartup
...omplaining about an undefined WinMain entry point. Defining an entry point called main does nothing to solve that.
– IInspectable
Jan 16 '18 at 11:10
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Checking if jquery is loaded using Javascript
... of jQuery. If jQuery isn't loaded then $() won't even run at all and your callback won't execute, unless you're using another library and that library happens to share the same $() syntax.
Remove your $(document).ready() (use something like window.onload instead):
window.onload = function() {
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Failure [INSTALL_FAILED_ALREADY_EXISTS] when I tried to update my application
...nstall from all accounts (see GregP's answer). This worked for me after I did that.
– J.D. Sandifer
Nov 24 '16 at 19:33
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How can I efficiently download a large file using Go?
...c() curl until I fell into some OS compat and chroot issues that I really did not want configure around because it's a sensible security model. So U replace my CURL with this code and got a 10-15x performance improvement. DUH!
– Richard
Jan 16 at 15:45
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Creating my own Iterators
...hape(shape), offset(x,y) {}
struct it_state {
int pos;
inline void next(const Piece* ref) { ++pos; }
inline void begin(const Piece* ref) { pos = 0; }
inline void end(const Piece* ref) { pos = ref->shape.vec.size(); }
inline Point get(Piece* ref) { return ref->offset + re...