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right click context menu for datagridview

...text Menu key). Cell selection on right mouse click has to be handled manually. Showing the context menu does not need to be handled as this is handled by the UI. This completely mimics the approach used by Microsoft Excel. If a cell is part of a selected range, the cell selection doesn't change a...
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How do I preview emails in Rails?

...iables the template expects. This could be done with fixtures, but I typically prefer to just grab some pseudo-random real data. Remember - this is NOT a unit test - this is purely a development aid. It doesn't need to produce the same result every single time - in fact - it's probably better if ...
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How can I install a local gem?

If I download a .gem file to a folder in my computer, can I install it later using gem install ? 9 Answers ...
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How can I measure the actual memory usage of an application or process?

... With ps or similar tools you will only get the amount of memory pages allocated by that process. This number is correct, but: does not reflect the actual amount of memory used by the application, only the amount of memory reserved for it can be misleading if pages are shared, for example by s...
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What is the difference between pip and conda?

...now pip is a package manager for python packages. However, I saw the installation on IPython's website use conda to install IPython. ...
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How to draw circle in html page?

...have a higher chance of it looking the same on different systems since not all computers/browsers have the same fonts installed. share | improve this answer | follow ...
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What is the maximum length of a Push Notification alert text?

... thing the documentation says is: In iOS 8 and later, the maximum size allowed for a notification payload is 2 kilobytes; Apple Push Notification Service refuses any notification that exceeds this limit. (Prior to iOS 8 and in OS X, the maximum payload size is 256 bytes.) This is what I could ...
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How to measure elapsed time in Python?

... If you just want to measure the elapsed wall-clock time between two points, you could use time.time(): import time start = time.time() print("hello") end = time.time() print(end - start) This gives the execution time in seconds. Another option since 3.3 might ...
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AES Encryption for an NSString on the iPhone

...o does seem to work pretty decently... aside from the extra comma in each call to CCCrypt() which caused compile errors. A later comment on that post includes this adapted code, which works for me, and seems a bit more straightforward. If you include their code for the NSData category, you can writ...
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How to get the unique ID of an object which overrides hashCode()?

... Uniqueness isn't guaranteed at all ... for a practical JVM implementation. Guaranteed uniqueness requires either no relocation / compaction by the GC, or a big and expensive data structure for managing the hashcode values of live objects. ...