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How can I check if a program exists from a Bash script?
...t or even hook into the package manager.
So, don't use which. Instead use one of these:
$ command -v foo >/dev/null 2>&1 || { echo >&2 "I require foo but it's not installed. Aborting."; exit 1; }
$ type foo >/dev/null 2>&1 || { echo >&2 "I require foo but it's not...
What is the difference between shallow copy, deepcopy and normal assignment operation?
...list but inner lists are references. For the inner lists, would the copied one influenced by original one? I create a list of lists like list_=[[1,2],[3,4]] newlist = list_.copy() list_[0]=[7,8] and the newlist remains the same, so does the inner list are references?
– Alston
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Select TreeView Node on right click before displaying ContextMenu
... way the tree was populated, the sender and the e.Source values may vary.
One of the possible solutions is to use e.OriginalSource and find TreeViewItem using the VisualTreeHelper:
private void OnPreviewMouseRightButtonDown(object sender, MouseButtonEventArgs e)
{
TreeViewItem treeViewItem = V...
How can I tell jackson to ignore a property for which I don't have control over the source code?
Long story short, one of my entities has a GeometryCollection that throws an exception when you call "getBoundary" (the why of this is another book, for now let's say this is the way it works).
...
Apache Spark: The number of cores vs. the number of executors
...apacity
of the NodeManagers. The application master will take up a core on one
of the nodes, meaning that there won’t be room for a 15-core executor
on that node. 15 cores per executor can lead to bad HDFS I/O
throughput.
A better option would be to use --num-executors 17
--executor-cores 5 --exec...
receiving error: 'Error: SSL Error: SELF_SIGNED_CERT_IN_CHAIN' while using npm
... also guarantees that you are talking to the real registry.npmjs.org . Someone could potentially install malicious packages.
– adotout
Jan 13 '14 at 12:46
60
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Encoding an image file with base64
...d Jul 31 '14 at 19:53
Alex Zavatone
3,1763030 silver badges4545 bronze badges
answered Sep 15 '10 at 7:31
Jim ...
Invalidating JSON Web Tokens
...
I too have been researching this question, and while none of the ideas below are complete solutions, they might help others rule out ideas, or provide further ones.
1) Simply remove the token from the client
Obviously this does nothing for server side security, but it does stop ...
to_string is not a member of std, says g++ (mingw)
...an "MinGW-builds" are builds of MinGW-w64, a different project to MinGW. One reason that MinGW-w64 was forked off was so they they could in fact fix bugs like the one this thread was about.
– M.M
Mar 27 '16 at 7:33
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.Net picking wrong referenced assembly version
... to start developing on it and have run into a problem with the version of one of my referenced assemblies (a telerik DLL as it happens).
...