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Check if a given key already exists in a dictionary and increment it
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To answer the question "how can I find out if a given index in that dict has already been set to a non-None value", I would prefer this:
try:
nonNone = my_dict[key] is not None
except KeyError:
nonNone = False
This conforms to the already invoked concept of EAFP (easier t...
default select option as blank
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</select>
JS
document.getElementById("myDropdown").selectedIndex = -1;
or JQuery
$("#myDropdown").prop("selectedIndex", -1);
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Run a Python script from another Python script, passing in arguments [duplicate]
... work for me if the main program has optional parameters. Here I get "list index out of range". Better have a Main(sys.argv) and handle the list of arguments in Main
– 576i
Nov 11 '14 at 8:48
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How do I create a multiline Python string with inline variables?
...ct)
print(multiline_string)
Also a list can be passed to format(), the index number of each value will be used as variables in this case.
list = ['go',
'now',
'great']
multiline_string = '''I'm will {0} there
I will go {1}
{2}'''.format(*list)
print(multiline_string)
Both s...
What is the documents directory (NSDocumentDirectory)?
...ForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES) objectAtIndex:0]
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Rename a git submodule
...t add newpath
git submodule sync
Note: this approach does not update the index and .gitmodules properly in 2018 versions of GIT.
Note: You may be able to now just do git mv oldpath newpath now, as pointed out in VonC's answer. (Ensure you are using the latest version of git)
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How do I tell if a regular file does not exist in Bash?
...rue if a string is not empty. ~ ibm.com/developerworks/library/l-bash-test/index.html
– BlueCacti
May 5 '14 at 11:06
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How to avoid reverse engineering of an APK file?
... the app, and into a webservice, hidden behind a server side language like PHP. For example, if you have an algorithm that's taken you a million dollars to write. You obviously don't want people stealing it out of your app. Move the algorithm and have it process the data on a remote server, and use ...
Convert a JSON string to object in Java ME?
...rm is an object having get() and opt() methods for accessing the values by index, and put() methods for adding or replacing values. The values can be any of these types: Boolean, JSONArray, JSONObject, Number, and String, or the JSONObject.NULL object.
JSONStringer.java
A JSONStringer is a tool for ...
Print the contents of a DIV
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You might need to put z-index: 9999999; in case you have other elements positioned higher.
– Adam M.
Oct 21 '16 at 12:48
add...